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Precision Cooling
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Liebert® Xtreme Density™
System Design Manual
TABLE OF CONTENTS
1.0
SYSTEM DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
European Union Fluorinated Greenhouse Gas Requirements . . . . . . . . . . . . . . . . . . . . . . . .
Generic Piping Layouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XDA—Air Flow Enhancer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XDCF—Liebert XD CoolFrame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XDH—Horizontal Cooling Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XDO—Overhead Cooling Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XDV—Vertical, Above-Cabinet Cooling Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XDC—Refrigerant Chiller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.8.1
1.9
Liebert XDC Minimum Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Liebert XDP—Pumping Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.9.1
1.10
1
2
3
4
5
6
7
8
Liebert XDP Minimum Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Liebert XD Piping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.10.1 Liebert XD Field Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.0
STARTING A NEW EQUIPMENT COOLING PROJECT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.1
2.2
Determining Cooling Equipment Needs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Implementing a Hot-Aisle/Cold Aisle Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.0
DESIGNING A LIEBERT XD SOLUTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1
3.2
3.3
3.4
3.5
Determine Cooling Requirements and Select Liebert XD System . . . . . . . . . . . . . . . . . . . .
Calculate the Heat Load to be Handled by Liebert XD System . . . . . . . . . . . . . . . . . . . . . .
Selecting Liebert XD Cooling Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Airflow Requirements for Liebert XD Solutions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configuring a Liebert XD System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5.1
3.6
3.7
3.8
Number of Modules Supported by a Liebert XDP or Liebert XDC . . . . . . . . . . . . . . . . . . . . . 14
Liebert XDCF Placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Liebert XDH Placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Liebert XDO Placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.8.1
3.8.2
3.9
3.10
3.11
3.12
3.13
3.14
3.15
3.16
3.17
3.18
13
13
14
14
14
Determining Spacing of Liebert XDOs in an Aisle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Determining Vertical Placement of Liebert XDOs Above the Cold Aisle . . . . . . . . . . . . . . . . 18
Liebert XDV Unit Placement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XDP/Liebert XDC Placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Examples of Expansion and Interlaced Connection of Liebert XD Cooling Modules . . . . . .
Liebert XD Piping System Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XD Piping Slope. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bypass Flow Controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Piping Installation Method Prefabricated Headers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XD Flex Pipe Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XD Refrigerant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Determining Refrigerant Volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19
20
20
22
24
24
27
31
32
32
3.18.1 Liebert XDP/Liebert XDC Pumped R-134a Circuit Volume . . . . . . . . . . . . . . . . . . . . . . . . . . 32
3.18.2 Calculating Refrigerant R134a Charge—Example. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
3.18.3 Liebert XDC DX R-407c Circuit Volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
i
3.19
3.20
3.21
Chilled Water Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Temperature/Humidity Sensor Locations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
4.0
LIEBERT XD COOLING MODULES—LIEBERT XDCF, LIEBERT XDH, LIEBERT XDO AND LIEBERT XDV37
4.1
4.2
4.3
4.4
Liebert XDCF Standard Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XDCF Mechanical Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XDCF Installation Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XDCF Piping Connection Methods and Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.4.1
37
38
39
39
Header System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
4.5
4.6
4.7
4.8
4.9
4.10
Liebert XDH Standard Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Optional Features—Liebert XDH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XDO Standard Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Optional Features Liebert XDO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XDV Standard Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Optional Features—Liebert XDV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.0
LIEBERT XDC AND LIEBERT XDP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
5.1
Liebert XDC Standard Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
5.1.1
40
40
42
42
46
46
Liebert XDC Optional Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
5.2
Liebert XDP Standard Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
6.0
SPECIFICATIONS AND MODEL NUMBER NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . . . . . . 65
ii
FIGURES
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Figure 10
Figure 11
Figure 12
Figure 13
Figure 14
Figure 15
Figure 16
Figure 17
Figure 18
Figure 19
Figure 20
Figure 21
Figure 22
Figure 23
Figure 24
Figure 25
Figure 26
Figure 27
Figure 28
Figure 29
Figure 30
Figure 31
Figure 32
Figure 33
Figure 34
Figure 35
Figure 36
Figure 37
Figure 38
Figure 39
Figure 40
Figure 41
Figure 42
Figure 43
Figure 44
Figure 45
Figure 46
Figure 47
Figure 48
Liebert XDP generic piping layout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Liebert XDC generic piping layout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Liebert XDA—air flow enhancer—on equipment enclosure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Liebert XDCF units on Egenera’s BladeFrame EX cabinets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Liebert XDH—horizontal cooling module in hot aisle-cold aisle arrangement . . . . . . . . . . . . . . . . 5
Suspended Liebert XDO modules in hot aisle-cold aisle arrangement . . . . . . . . . . . . . . . . . . . . . . 6
Top-mounted Liebert XDV modules with hard piping in hot aisle-cold aisle arrangement . . . . . . 7
Top-mounted Liebert XDV modules with Liebert Flex Pipe in hot aisle-cold aisle
arrangement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Liebert XD Chiller unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Liebert XDP pumping unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Liebert XD connection port kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Hot aisle-cold aisle arrangement with under-floor source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Liebert XDCF unit mounting locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Liebert XDH placement (top view). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Liebert XDO spacing—horizontal (side view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Liebert XDO placement over cold aisle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Positioning Liebert XDV on top of cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Liebert XDV units mounted on racks emitting 3kW of heat, top view . . . . . . . . . . . . . . . . . . . . . 20
Liebert XDV units mounted on racks emitting 5kW of heat, top view . . . . . . . . . . . . . . . . . . . . . 21
Liebert XDV units mounted on racks emitting 8kW of heat top view . . . . . . . . . . . . . . . . . . . . . . 21
Liebert XDV units mounted on racks emitting 16kW of heat top view . . . . . . . . . . . . . . . . . . . . . 22
Piping for Liebert XDP/Liebert XDC used with Liebert XD cooling units . . . . . . . . . . . . . . . . . . 22
Generic piping layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Bypass flow controller details, dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Bypass flow controller arrangement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Bypass flow controller piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Hard-pipe connection diagram for Liebert cooling modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Two-port prefabricated piping for Liebert XD cooling modules . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Four-port prefabricated piping for Liebert XD cooling modules . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Five-port prefabricated piping for Liebert XD cooling modules . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Ten-port prefabricated piping for Liebert XD cooling modules . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Additional oil requirements for refrigerant charge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Liebert XDCF generic piping layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Overall dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Liebert XDCF unit mounting locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Liebert XDCF supply and return piping access points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Liebert XDH dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Supply and return piping connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Dimensional data—Liebert XDO hard-piped units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Dimensional data—Liebert XDO with pre-charged option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Liebert XDO internal mounting location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Top and front electrical access points and terminal block—standard Liebert XDO modules . . . 45
Top and front electrical access points—Liebert XDO smart modules . . . . . . . . . . . . . . . . . . . . . . 45
Liebert XDV dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Liebert XDV dimensions with one-shot connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Suspending single Liebert XDV from Unistruts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Suspending single Liebert XDV from the roof structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Alternative mounting methods—mounting multiple Liebert XDV units . . . . . . . . . . . . . . . . . . . 50
iii
Figure 49
Figure 50
Figure 51
Figure 52
Figure 53
Figure 54
Figure 55
Figure 56
Figure 57
Figure 58
Figure 59
Figure 60
Figure 61
Figure 62
Figure 63
Figure 64
Figure 65
Figure 66
Figure 67
Figure 68
Figure 69
Figure 70
Figure 71
Figure 72
Figure 73
Figure 74
Liebert XDC dimensional data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XDC piping locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Positioning a water/glycol Liebert XDC for placement on a floor stand . . . . . . . . . . . . . . . . . . . .
Piping locations—floor stand and valve assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front view of Liebert XDC and electrical enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XDC electrical enclosure knockout locations for field wiring . . . . . . . . . . . . . . . . . . . . . .
Liebert XDC high-voltage connections—primary disconnect switch, 60Hz models . . . . . . . . . . .
Liebert XDC high-voltage connections—primary disconnect switch, 50Hz models . . . . . . . . . . .
Liebert XDC high-voltage connections—secondary disconnect switch, 60Hz models. . . . . . . . . .
Liebert XDC high-voltage connections—secondary disconnect switch, 50Hz models. . . . . . . . . .
Liebert XDC heat rejection electrical connection points. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XDC electrical enclosure knockout locations for Extra Low-Voltage connections . . . . . .
Liebert XDC Extra Low Voltage field-connection points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XDP dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XDP piping access points and external features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front view of Liebert XDP and electrical enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XDP electrical enclosure knockout location for hazardous voltage wiring . . . . . . . . . . . .
Liebert XDP electrical enclosure knockout locations for field wiring . . . . . . . . . . . . . . . . . . . . . .
Liebert XDP high-voltage connections—60Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XDP high-voltage connections—50Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XDCF model number nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XDH model number nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XDO model number nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XDV model number nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XDC model number nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XDP model number nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
iv
51
52
53
54
55
55
56
56
57
57
58
58
59
60
61
62
62
63
63
64
65
68
71
74
77
79
TABLES
Table 1
Table 2
Table 3
Table 4
Table 5
Table 6
Table 7
Table 8
Table 9
Table 10
Table 11
Table 12
Table 13
Table 14
Table 15
Table 16
Table 17
Table 18
Table 19
Table 20
Table 21
Table 22
Table 23
Table 24
Table 25
Table 26
Table 27
Table 28
Table 29
Table 30
Table 31
Table 32
Table 33
Table 34
Table 35
Table 36
Table 37
Table 38
Table 39
Table 40
Table 41
Table 42
Table 43
Liebert XD field-installed port kits header connection size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum and minimum modules supported by a Liebert XDP or Liebert XDC . . . . . . . . . . . . .
Calculating quantity and spacing of Liebert XDO modules (example below is Liebert
XDO20) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Determine required number of Liebert XDV modules (example below is Liebert XDV10) . . . . .
Supply, return pipe sizes for refrigerant loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bypass flow controllers for Liebert XDC- or Liebert XDP-based systems . . . . . . . . . . . . . . . . . . .
Two-port prefabricated piping legend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Four-port prefabricated piping legend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Five-port prefabricated piping legend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ten-port prefabricated piping legend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XD Flex Pipe assemblies, supply and return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
System refrigerant charge for the supply and return mains . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
R-134a refrigerant charge for hard-piped connector lines to and from any model
Liebert XDH/Liebert XDO/Liebert XDV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
R-134a refrigerant charge for Flex Pipe connector lines to and from any model
Liebert XDO/Liebert XDH/Liebert XDV/Liebert XDCF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
System R-134a charge for a Liebert XDP/Liebert XDC with any model Liebert
XDH/Liebert XDO/Liebert XDV/Liebert XDCF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Calculating refrigerant charge—example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Worksheet to calculate refrigerant charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Compressor oil types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Indoor unit refrigerant charge—R-407c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air cooled systems - liquid line charge - R-407c refrigerant per 100 ft (30 m) of Type “ACR”
copper tube . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Indoor water/glycol cooled condenser module charge—R-407c . . . . . . . . . . . . . . . . . . . . . . . . . . .
Outdoor condenser charge—R-407c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensional data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XD Chiller dimensions, weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XD Chiller piping connection sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XDC Water/Glycol Piping Connection Sizes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XDP dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unit piping outlet connection sizes, inches, OD Cu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XDCF specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XDH20 specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XDH32 specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XDO16 specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XDO20 specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Options for Liebert XDO20 and Liebert XDO16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XDO dimensions—domestic and export . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XDV8 specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XDV10 specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XDV dimensions—domestic and export . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liebert XDC160 specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Floor stand specifications—water-cooled Liebert XDC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Floor stand specifications—Liebert XDC with 40% propylene glycol . . . . . . . . . . . . . . . . . . . . . .
Floor stand specifications—Liebert XDC with 40% ethylene glycol . . . . . . . . . . . . . . . . . . . . . . .
Liebert XDP160 specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
v
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System Description
1.0
SYSTEM DESCRIPTION
The Liebert XD™ family of cooling units delivers efficient, sensible cooling to high-heat environments. Liebert XD systems are designed to cool computer racks and hot zones in a data center or computer room without taking up expensive floor space for cooling components.
The Liebert XD family includes:
•
•
•
•
Liebert XDC—Liebert XD Chiller; cools and pumps refrigerant to cooling modules
Liebert XDP—Liebert XD Pumping unit; pumps refrigerant to cooling modules
Liebert XDA—mounts on the rear of the equipment cabinet
Liebert XDCF—Liebert XD CoolFrame; mounts on the rear of an Egenera BladeFrame EX cabinet
• Liebert XDH—Liebert XD Horizontal row cooler; integrated into hot aisle-cool aisle room layout
• Liebert XDO—Liebert XD Overhead unit; suspended from the ceiling structure
• Liebert XDV—Liebert XD Vertical unit; mounted on top of the equipment cabinet or suspended
from the ceiling structure
Systems combining Liebert XDO and Liebert XDV units can remove more than 20 kW (5.7 tons) of
heat per cabinet. A set of Liebert XDCF modules also can remove 20kW (5.7 tons) of heat from an
Egenera BladeFrame EX cabinet. A system with Liebert XDH units can remove more than 30kW
(8.5tons) of heat per rack.
For minimum Liebert XDP and Liebert XDC load recommendations, see 1.9.1 - Liebert XDP Minimum Load; 1.8.1 - Liebert XDC Minimum Load; and Tables 39 and 43.
The Liebert XD system also performs at high efficiency rates. Properly spaced cooling modules and
the Liebert XD system’s fluid phase change technology, combine to reduce a Liebert XD system’s
energy consumption to at least 27 percent less than a traditional cooling system.
The Liebert XD family maintains this energy efficiency by employing the heat absorption properties
of a liquid (pumped refrigerant) through a phase change. Refrigerant is pumped as a liquid, becomes
a gas within the heat exchangers of the cooling modules (either the Liebert XDCF, Liebert XDH, Liebert XDO or Liebert XDV) and then is returned to either the Liebert XDP or Liebert XDC where it
condenses to a liquid. This eliminates the compression cycle required by traditional systems. And, if a
leak were to occur, the environmentally friendly refrigerant in the data center would escape as a gas,
causing no harm to critical equipment. Because no compressor is used in the pumped refrigerant circuit, no oil is needed.
Liebert XD cooling modules further increase efficiency with optional control board that reduces fan
use when maximum cooling levels are not required. The control board is available on Liebert XDH,
Liebert XDO and Liebert XDV units.
1.1
European Union Fluorinated Greenhouse Gas Requirements
Stationary air conditioning, refrigeration, heat pump equipment and stationary fire protection systems in the European Community market and operating with fluorinated greenhouse gases (f-gas),
such as R407C, R134a, R410A, must comply with the F-Gas Regulation: (EC) No. 842/2006 (F-gas).
The regulation prohibits, among other actions, venting fluorinated greenhouse gases to the atmosphere.
The F-Gas Regulation requires operators to use all measures that are technically feasible and do not
entail disproportionate cost to prevent leakage of these gases, to test for leakage regularly and to
recover f-gas before disposing of equipment, as well as during service and maintenance.
Refer to the full regulation for additional details.
1
System Description
1.2
Generic Piping Layouts
Liebert XD systems are available in two configurations—differentiated essentially by the method of
heat rejection (see Figures 1 and 2). The Liebert XDP is a pumping unit connected to a building
chilled water system to control and circulate the refrigerant. Liebert XDPs pump refrigerant to Liebert XDCF, Liebert XDH, Liebert XDO or Liebert XDV modules, isolate refrigerant circuit from building chilled water supply with an internal heat exchanger and maintains refrigerant temperature
above the actual dew point. The Liebert XDC incorporates the pumping functions with the chiller,
which must be connected to a separate heat rejection system. Pumping and refrigerant control are
performed by Liebert XDC.
Figure 1
Liebert XDP generic piping layout
Liebert XDP System Configuration
Liebert
XDP
Building
Chilled
Water
Pumped
Refrigerant
R134a
Liebert
XDP
Figure 2
Pumped
Refrigerant
R134a
* Liebert XD
Cooling Module
* Liebert XD
Cooling Module
* Liebert XD
Cooling Module
Supply Piping
Return Piping
* Liebert XDCF,
Liebert XDH, Liebert
XDO or Liebert XDV
Liebert XDC generic piping layout
Liebert XDC System Configuration
Liebert Heat
Rejection
Air-Cooled or
Water/Glycol Cooled
Liebert XDC
R407C
Pumped
Refrigerant
R134a
Liebert XDC
R407C
Pumped
Refrigerant
R134a
Liebert XD
Cooling Module*
Liebert XD
Cooling Module*
Return Piping
Liebert XD
Cooling Module*
Liebert XD
Cooling Module*
2
Supply Piping
* Liebert XDCF,
Liebert XDH, Liebert
XDO or Liebert XDV
System Description
1.3
Liebert XDA—Air Flow Enhancer
The Liebert XDA is a fan unit that boosts the airflow through densely populated enclosures, removing
hot spots from within the racks. One or two units can be mounted on the rear of most rack enclosures.
Figure 3
Liebert XDA—air flow enhancer—on equipment enclosure
3
System Description
1.4
Liebert XDCF—Liebert XD CoolFrame
The Liebert XDCF is a self-contained module designed to cool Egenera’s BladeFrame EX cabinets and
equipment without exhausting heat into the room. Two modules (top and bottom) may be mounted on
the rear of a BladeFrame cabinet. Liebert XDCF modules consist of a sheet-metal frame, coil and filter dryer. It has no moving parts and needs no electricity.
The unit is available with optional, Liebert XD Flex Pipes (flexible metal pipes) with quick-connect
couplings at each end for easy connection to the refrigerant distribution pipes.
Figure 4
Liebert XDCF units on Egenera’s BladeFrame EX cabinets
4
System Description
1.5
Liebert XDH—Horizontal Cooling Module
The Liebert XDH is designed for placement within a row of computer cabinets in the data center in a
hot-aisle-cold-aisle arrangement to maximize the Liebert XDH’s cooling. The Liebert XDH, available
in a half-rack-width unit (12" [305mm]), is intended for use with a Liebert XD pumped refrigerant
cooling system, supplied by either a Liebert XDP or Liebert XDC. The unit takes in hot air through
the rear from the hot aisle, cools the air by air-to-fluid heat exchangers and discharges the air
through the front of the unit into the cold aisle in a diffuse pattern. The cooling air is then drawn into
the enclosures to cool the equipment.
Replaceable front panels on the Liebert XDH may be customized to match the appearance of various
computer manufacturer’s equipment, allowing the Liebert XDH to blend in with adjacent server
equipment and enclosures. Unidirectional and bidirectional diffusers are available to direct cooling
air for more efficient cooling, depending on the Liebert XDH’s positioning in a row or at the end of a
row. Chilled R-134a refrigerant is provided to the Liebert XDH by a Liebert XD Pumping unit (Liebert XDP) or by a Liebert XD Chiller (Liebert XDC). The Liebert XDH has dual refrigeration circuits,
one in the upper half of the unit and the other in the lower half. This permits increasing and decreasing cooling levels in response to server room conditions. The dual refrigeration circuits permits interlaced connection of two Liebert XD refrigerant sources to enhance system reliability. The Liebert
XDH may be installed in a Liebert XD piping system that includes other Liebert XD cooling modules.
Controls on the front of the Liebert XDH permit independent operation of the two banks of fans. Dual
power connections ensure continued fan operation if one of two electrical sources fails. Optional smart
modules allow remote shutdown, fan failure alarms, condensate detection and switching fan per bank
On and Off. This saves energy by permitting the unit to run with two fans per bank and switching on
the middle when the temperature requires all fans for cooling.
The Liebert XDH is available for hard-piped configurations and with flexible metal pipes with
quick-connect couplings (one-shot or removable) at each end for easy connection to the header system.
The Liebert XDH and Liebert XD Flex Pipes are also available for shipment with a pre-charge of
R134a. This option requires the use of the one-shot flexible pipes.
Figure 5
Liebert XDH—horizontal cooling module in hot aisle-cold aisle arrangement
5
System Description
1.6
Liebert XDO—Overhead Cooling Module
The Liebert XDO is an overhead cooling system designed for installation above heat-dissipating
equipment. A fan draws hot air exhausted from the equipment through two cooling coils and discharges cool air back down to the equipment (see Figure 6).
A Liebert XDO smart module will allow remote monitoring, shutdown, fan failure alarms, condensate
detection and automatically cycling the fan On and Off as the heat load requires. The Liebert
XDP/Liebert XDC monitors room conditions and prevents coil condensation by maintaining the temperature of the refrigerant pumped to the Liebert XDOs above the room dew point.
The Liebert XDO is available for hard-piped configurations or with Liebert XD Flex Pipes with quickconnect couplings (one-shot) for easy connection to the header system. When the pre-charged option is
selected, the Liebert XDO and the one-shot flexible pipes contain R134a.
NOTE
The Liebert XDO is the most sensitive module to system load. The Liebert XDO’s air intake and
the discharge are not separated by a rack. This can lead to the Liebert XDO pulling in cold air
rather than hot air. The Liebert XDP and Liebert XDC minimum loads must be met to prevent
this from occurring.
Figure 6
Suspended Liebert XDO modules in hot aisle-cold aisle arrangement
Cold Aisle
Hot Aisle
Cold Aisle
Hot Aisle
6
Cold Aisle
System Description
1.7
Liebert XDV—Vertical, Above-Cabinet Cooling Module
The Liebert XDV cooling system is designed to be attached to the top of a computer cabinet or rack
containing heat-dissipating equipment. Two fans draw hot air exhausted from the equipment or from
the hot aisle, pass it through a cooling coil and discharge cool air back down to the cold aisle, where
the equipment's air intake is located.
The Liebert XDV comes from the factory ready to draw heated air through a perforated grille on the
back of the unit. The Liebert XDV is easily modified to draw hot air through the bottom of the unit,
should that cooling method be better suited to your application.
Liebert XDV smart modules allow remote shutdown, fan failure alarms and automatically switching
the second fan On and Off. This saves energy by permitting the unit to run with one fan and switching on a second fan when the temperature requires both fans for cooling.
The Liebert XDV is available for hard-piped configurations or with Liebert XD Flex Pipes with quickconnect couplings (one-shot or removable) for easy connection to the header system. The Liebert XDV
and flexible pipes are also available for shipment with a pre-charge of R134a. This option requires the
use of the one-shot flexible pipes
Figure 7
Top-mounted Liebert XDV modules with hard piping in hot aisle-cold aisle arrangement
Cold
Aisle
Figure 8
Hot
Aisle
Cold
Aisle
Hot
Aisle
Cold
Aisle
Top-mounted Liebert XDV modules with Liebert Flex Pipe in hot aisle-cold aisle
arrangement
Cold
Aisle
Hot
Aisle
Cold
Aisle
7
System Description
1.8
Liebert XDC—Refrigerant Chiller
The Liebert XDC is an indoor chiller that connects directly to the Liebert XD cooling modules and provides refrigerant circulation and control. The Liebert XDC keeps the refrigerant temperature above
the room dew point at the sensors. The Liebert XDC contains a refrigerant to refrigerant heat
exchanger along with two tandem scroll compressor circuits. This allows heat rejection to the outdoor
ambient air by using either the air-cooled condensers or water/glycol shell-and-tube condensers much
like a standard computer room air conditioning unit. The Liebert XDC employs two remote sensors
(for redundancy) to determine the temperature and humidity in the air and instantly adjusts refrigerant supply temperature to compensate for changing conditions.
1.8.1
Liebert XDC Minimum Load
The Liebert XDC’s minimum recommended operating load is 40% of system nominal capacity. For
example, a Liebert XDC160 60Hz system’s minimum load would be 64 kW. Loading below this value
can unfavorably affect system operation.
Figure 9
Liebert XD Chiller unit
8
System Description
1.9
Liebert XDP—Pumping Unit
The Liebert XDP isolates the building’s chilled water circuit from the pumped refrigerant circuit. The
Liebert XDP circulates refrigerant to Liebert XD cooling modules while preventing condensation by
maintaining the refrigerant’s temperature above the room dew point at the sensors. The Liebert XDP
employs two sets (for redundancy) of remote sensors to determine the temperature and humidity in
the air and instantly adjusts refrigerant supply temperature to compensate for changing conditions.
The Liebert XDP’s uses the Liebert iCOM®. This advanced control enables the user to monitor essentially all aspects of the Liebert XD Precision Cooling system, from operating status to maintenance.
The Liebert iCOM also permits networking cooling units for precise, efficient operation.
1.9.1
Liebert XDP Minimum Load
The Liebert XDP’s minimum recommended operating load is 30% of system nominal capacity. For
example, a Liebert XDP160 60Hz system’s minimum load would be 48 kW. Loading below this value
can unfavorably affect system operation.
Figure 10 Liebert XDP pumping unit
9
System Description
1.10
Liebert XD Piping
Liebert XD Piping is prefabricated distribution piping that is installed in anticipation of a growing system. Liebert XD cooling modules are added as required and are quickly made operational with flexible
connection piping with threaded couplings. This unique system allows the room cooling capacity to
increase to more than 30kW per rack with no additional disruptive piping installation. The flexible
connection piping also allows the cooling modules to be re-positioned without interruption in operation.
1.10.1 Liebert XD Field Piping
Flexible Piping Kit
Flex pipe kits are available in lengths of 4, 6, 8 and 10 feet (1.2, 1.8, 2.4 and 3 meters). Connection
style to the module end may be straight or 90 degrees with one-shot style couplings or removable couplings. The one-shot flexible pipes are charged at the factory with R134a. Connection to the prefabricated piping assembly is a threaded coupler. For information on acquiring the correct kit for your
installation refer to DPN000780, available by calling 1-800-LIEBERT and from your local Emerson
Network Power representative. Contact the factory when ordering additional flex piping kits for Liebert XD systems installed before 2007.
Prefabricated Headers
Field piping kits are available in several versions
• 10 ft. (3.05m) with 5 or 10 ports
• 8 ft. (2.44m) with 2 or 4 ports
Each version is available in two pipe sizes:
• Supply pipe: 1-1/8"; return pipe: 2-1/8"
• Supply pipe: 1-3/8"; return pipe: 2-5/8"
Each kit contains one (1) supply pipe and one (1) return pipe. Each port has a threaded coupling at
the end with automatic shutoff when disconnected. Each port also has a ball valve for manual shutoff.
For more information refer to section 3.12 - Liebert XD Piping System Design.
Liebert XD Connection Port Kit
The connection ports in the Liebert XD Field Piping Kits are available as Liebert XD Connection Port
Kit. Each port has a threaded coupling, with automatic shutoff when disconnected, at the end. Each
port also has a ball valve for manual shutoff. Each kit contains one supply and one return port. Two
kit sizes are available:
• Supply pipe: 1-1/8"; return pipe: 2-1/8"
• Supply pipe: 1-3/8"; return pipe: 2-5/8"
Figure 11 Liebert XD connection port kit
Return valve shown
Supply valve appearance
is similar, but is smaller
Table 1
Liebert XD field-installed port kits header connection size
Assembly P#
Supply Header
Diameter
Return Header
Diameter
183169G3
183169G4
1-1/8"
1-3/8"
2-1/8"
2-5/8"
10
Starting a New Equipment Cooling Project
2.0
STARTING A NEW EQUIPMENT COOLING PROJECT
2.1
Determining Cooling Equipment Needs
1.
Is adequate space available for a Liebert XD installation?
2.
Is the hot aisle/cold aisle approach being utilized for this room design or can it
be utilized in this room design?
3.
Is redundant cooling equipment required?
4.
Are there access considerations for all components (possible rigging problems)
5.
What heat load growth is anticipated over the next few years?
6.
How are the cabinets going to be populated (density of heat generation)?
7.
What monitoring requirements are desired or needed?
8.
Who will be involved in this project (stakeholders)?
9.
Is there existing computer room environmental cooling systems for humidity
control and filtration?
10.
Is the vapor barrier sufficient?
11.
Is a chilled water system available?
a.
What is the system’s capacity?
b.
What is the system’s chilled water supply temperature?
c.
Does the chilled water supply temperature vary during the year or is the
temperature constant?
12.
How much power is available for cooling equipment?
13.
What is the maximum distance between the Liebert XDP/Liebert XDC unit
and the farthest Liebert XD cooling module in the proposed layout?
14.
If an air cooled Liebert XDC is used – is an area available for the remote
condenser?
15.
Does the Liebert XD system refrigerant volume exceed 13 lb/1000ft3? If so, a
refrigerant detection and removal equipment may be required. Refer to 3.17 Liebert XD Refrigerant.
11
Starting a New Equipment Cooling Project
2.2
Implementing a Hot-Aisle/Cold Aisle Design
A best practice is to place equipment racks in alternating rows of cold aisles and hot aisles. This is
best accomplished when the layout of the file-server farm area is first being planned. It is exceedingly
more difficult to accomplish when the computer room is already populated with operating hardware.
In the cold aisle, the equipment racks are arranged face-to-face so the cooling air from the computer
room cooling unit discharged up through the perforated floor tiles is drawn into the face of the computer hardware and exhausted out the back of the equipment rack into the adjacent hot aisles.
Hot aisles are literally hot because the objective of the alternating cold and hot aisle design is to separate the source of cooling air from hot air discharge, which returns to the computer-room cooling unit.
Therefore, no perforated tiles should be placed in the hot aisles. This would mix hot and cold air,
thereby lowering the temperature of the air returning to the cooling units. This will reduce their
usable capacity.
Figure 12 Hot aisle-cold aisle arrangement with under-floor source
Heated air expelled from
racks is drawn into
cooling unit and returned
to floor supply
Cold air supplied
through perforated
floor tiles is drawn
into racks
12
Designing a Liebert XD Solution
3.0
DESIGNING A LIEBERT XD SOLUTION
Liebert XD systems are intended for use with precision air conditioning equipment, such as the Liebert Deluxe System/3 and Liebert DS. The precision air conditioning equipment is required for the
humidification and filtration of the room air.
The Liebert XD systems provide efficient, highly effective heat removal (sensible cooling only), without providing humidity control. The Liebert XD control system maintains the refrigerant temperature
just above the dew point of the space to prevent condensation. Since the capacity of the system is limited by the dew point in the space, sufficient dehumidification and an adequate vapor barrier must be
provided to maintain the dew point at or below the level necessary to achieve the required capacity.
The Liebert XD system is optimized for hot aisle/cold aisle equipment configurations, the industry’s
highest recommended method for dealing with extremely high heat loads.
Refer to the technical data manual of either the Deluxe System/3 (SL-18100) or the
Liebert DS (SL-18810) for additional installation and application guidelines that apply to all critical
space cooling applications.
3.1
Determine Cooling Requirements and Select Liebert XD System
1.
2.
3.
4.
5.
3.2
Calculate the total cooling required
Determine placement of the Liebert XD units
Determine required pipe sizes
Calculate the refrigerant volume of the Liebert XD systems
Complete design details including, electrical, mounting, piping, etc.
Calculate the Heat Load to be Handled by Liebert XD System
When designing a cooling solution using the Liebert XD system, the initial steps are similar to those
required to cool a conventional critical space. The total heat load must be calculated, including sensible and latent cooling requirements. These should be increased by the reserve capacity needed for
pull-down situations where the room temperature must be reduced and to provide for unexpected
increases in heat load.
NOTE
Reserve capacity is distinct from redundant capacity in that redundant capacity may or may
not be available concurrently with normal operating capacity. Reserve capacity is available
concurrently with normal operating capacity.
The next step is to determine how much of the required cooling capacity is to be provided by Liebert
Deluxe or Liebert DS units. If the facility is new, typically up to 150 watts per square foot (1500W/m2)
of cooling can be obtained from Liebert precision air conditioning units supplying air through a raised
floor. In existing facilities, such factors as raised floor height, under-floor obstructions or other limitations may reduce this to less than 50 watts per square foot (500 watts per m2).
Once the total required sensible cooling capacity is known, subtract the sensible cooling portion to be
provided by Liebert Deluxe or Liebert DS units. This yields the cooling capacity to be provided by the
Liebert XD system. Confirm the minimum heat load for the Liebert XDP/Liebert XDC is still present
in the data center (48kW & 64kW respectively)
13
Designing a Liebert XD Solution
3.3
Selecting Liebert XD Cooling Modules
The next step is to select the Liebert XD cooling modules to be configured into the solution. Liebert
XD modules that use pumped refrigerant can be connected to the same Liebert XDP/Liebert XDC piping circuit. This includes the Liebert XDCF, Liebert XDH, Liebert XDO and Liebert XDV.
Generally, the Liebert XDO is selected for use in new installations or renovations where the unit can
be installed on the ceiling or in the overhead space.
The Liebert XDV is designed to permit mounting directly on top of an equipment cabinet, for ease of
installation in existing facilities. The Liebert XDV may also be suspended from overhead, using suitable mounting methods.
The Liebert XDCF is a self-contained module designed to cool Egenera’s BladeFrame EX cabinets and
equipment without exhausting heat into the room. Two modules may be mounted on the rear of a
BladeFrame cabinet.
The Liebert XDH is installed among equipment cabinets and is particularly suited for new installations.
3.4
Airflow Requirements for Liebert XD Solutions
Computer manufacturers typically specify a temperature change from intake to exhaust (delta T) of
18-27°F (10-15°C) for the air passing through a rack enclosure. The heat generated by electronic
equipment combined with the tight quarters of equipment cabinets mean high volumes of air must
move through an enclosure to meet this cooling specification.
A Liebert XD system can supply the cold air to satisfy this cooling demand, but airflow through the
enclosure must be adequate to extract the heat from the cabinet. Liebert’s XDA units can boost the
airflow to levels necessary to protect critical equipment. The Liebert XDA is particularly suited to the
hot aisle/cold aisle arrangement.
3.5
3.5.1
Configuring a Liebert XD System
Number of Modules Supported by a Liebert XDP or Liebert XDC
The numerals designating the model size of a Liebert XD unit may be used to configure a cooling system. For example, a Liebert XDO20 has a model size of 20 and a Liebert XDP160 will accommodate
cooling modules with a cumulative model size of 160.
Similarly, the minimum number of modules connected to a Liebert XDP or Liebert XDC may be calculated using the model size number for the Liebert XDP or Liebert XDC and the modules. See Table 2.
Table 2
Maximum and minimum modules supported by a Liebert XDP or Liebert XDC
Liebert XDC
Liebert XDP
Max
Min
Max
Min
Liebert XDCF
16
6
16
5
Liebert XDH20
8
4
8
3
Liebert XDH32
5
2
5
2
Liebert XDO16
10
4
10
3
Liebert XDO20
8
4
8
3
Liebert XDV8
20
8
20
6
Liebert XDV10
16
7
16
5
Cooling
Module Type
Different types of Liebert XD cooling modules may be connected to the same Liebert XDP or Liebert
XDC as long as the sum of their cooling capacity does not exceed the supporting Liebert XDP’s or Liebert XDC’s model size number.
NOTE
Connecting only Liebert XDCF modules to a Liebert XD unit is not recommended because the
Liebert XDCF heat loading is dependent on server airflow and server load. Consult factory to
determine if sufficient heat load is available from the server for the Liebert XD system to
operate effectively.
14
Designing a Liebert XD Solution
3.6
Liebert XDCF Placement
The Liebert XDCF is a self-contained module designed to cool Egenera’s BladeFrame EX cabinets and
equipment. Liebert XDCF modules attach to the rear of the Egenera BladeFrame EX cabinet, beside
the power modules (see Figure 13). No cutting or drilling is required to attach the modules; all
mounting holes, slots and pins required are fabricated at the factory. The Liebert XDCF does not
require electrical connections.
The number of Liebert XDCF modules required is determined by the heat load of the cabinet—cabinets cannot share cooling from a Liebert XDCF module.
The Egenera BladeFrame EX cabinet has provisions for mounting two Liebert XDCF modules, should
the heat load require two modules. If only one Liebert XDCF will be needed, Liebert recommends
using the lower Liebert XDCF module.
The complete system consists of Liebert XDCF modules, piping, Liebert XDP or Liebert XDC refrigerant distribution units and those units’ chillers or drycoolers.
Figure 13 Liebert XDCF unit mounting locations
Liebert XDCF Modules
attached to
Egenera BladeFrame EX Cabinet
Upper Module
Lower Module
15
Designing a Liebert XD Solution
3.7
Liebert XDH Placement
The free-standing Liebert XDH cooling unit is best placed among the equipment cabinets in a
hot aisle-cold aisle arrangement (see Figure 14). The Liebert XDH draws in air from the hot aisle,
cools it and discharges the cooled air into the cold aisle where it is drawn into the equipment cabinets.
Even spacing aids in optimizing cooling.
Liebert XDH units should be placed among the cabinets that generate the greatest amount of heat. If
heat loads are dispersed evenly throughout the room, the Liebert XDH modules may be spread out
accordingly. Bi-directional air diffusers should be used on Liebert XDH modules installed between
racks.
If a Liebert XDH is installed at the end of a row, uni-directional air diffusers should be used on that
Liebert XDH. The uni-directional diffusers can be used for left or right air discharge by removing
them from the Liebert XDH, turning them 180 degrees, then reattaching them to the Liebert XDH.
Figure 14 Liebert XDH placement (top view)
Hot
Aisle
X
D
H
X
D
H
X
D
H
X
D
H
Cold
Aisle
X
D
H
X
D
H
X
D
H
X
D
H
Hot
Aisle
X
D
H
X
D
H
X
D
H
Cold
Aisle
16
X
D
D
H
H
Designing a Liebert XD Solution
3.8
Liebert XDO Placement
3.8.1
Determining Spacing of Liebert XDOs in an Aisle
Liebert XDO units should be placed in rows directly above the cold aisles of a room for optimum cooling. Each Liebert XDO serves an area equal in width to the cold aisle spacing, typically 12 to 16 feet
(3.7 to 4.9m). The length of the area served includes any space between Liebert XDO modules in a
row. Depending on the cooling capacity to be achieved, spacing between Liebert XDO modules in a
row may vary from zero to as much as 6 feet (1.8m). When the spacing increases to more than 6 feet
(1.8m), overall performance of the system may be negatively affected and gaps in cooling may occur.
Install one Liebert XDO at the end of each aisle being cooled and to space the remainder between
these end units as shown in Figure 15. This layout will block the incursion of hot air around the side
of the end cabinets. Allowing space between the Liebert XDO groups facilatates maintenance by
allowing access to the overhead space.
Figure 15 Liebert XDO spacing—horizontal (side view)
Front-to-rear spacing of pairs
of Liebert XDO modules
Pairs of Liebert XDO modules
above critical equipment
XDO height above
equipment to be cooled
Heat-Generating Critical Equipment
17
Designing a Liebert XD Solution
3.8.2
Determining Vertical Placement of Liebert XDOs Above the Cold Aisle
In the maximum density configuration, Emerson recommends placing the Liebert XDOs between 18
and 24 inches (457-609mm) above the equipment cabinets. In some cases where the required density
is less, the front-to-rear spacing of Liebert XDOs in a row will be increased. To ensure coverage of the
wider spaces between the Liebert XDO units, the vertical distance between the cabinets and the Liebert XDOs should be increased. However, the recommended maximum height of the Liebert XDO
above the cabinets is 30 inches (762mm). See Figure 16.
Figure 16 Liebert XDO placement over cold aisle
Hot air is
drawn into
the XDO for
cooling
Hard-Piped
Connection
One-Shot
Connection
18-24"
(45.7-60.9mm)
30" max
18-24"
(45.7-60.9mm)
30" max
Critical
Equipment
Critical
Equipment
Critical
Equipment
Cooled air
enters the
rack
4' *
(1.2m)
COLD AISLE
Critical
Equipment
Cooled air
enters the
rack
Hot air goes
into the hot
aisle
3' *
(.91m)
HOT AISLE
Hot air goes
into the hot
aisle
4' *
(1.2m)
COLD AISLE
Cold Aisle
Spacing
* Nominal Distance
Table 3 can be used to determine the correct number and spacing of Liebert XDOs.
Table 3
Calculating quantity and spacing of Liebert XDO modules (example below is Liebert XDO20)
Input Information
Total heat load in the room, kW
Reserve capacity needed
(10% to 25% of A is recommended)
Step
A
B
C
Existing/planned Liebert Deluxe/DS unit
sensible capacity, kW
F
G
Spacing of cold aisles, center-to-center,
typically 12-16 ft (3.7 to 4.9m)
Required cooling capacity, kW = A + B
D
E
Room area, square feet
Result
H
I
Required Liebert XD system cooling capacity, kW = C – D
Number of Liebert XDO20s required = E ÷ 20, rounded up (60Hz)
= E ÷ 16, rounded up (50Hz)
Number of Liebert XDP/Liebert XDC modules required = F ÷ 8,
rounded up (60Hz and 50Hz)
Area served by each Liebert XDO20 = H ÷ F
J
K
L
Spacing between each Liebert XDO = (I ÷ J) - 2
Required Liebert XD system cooling density = E x 1000 ÷ H
OK if under 640; otherwise, additional cooling is required from
Liebert Deluxe or Liebert DS units.
18
Designing a Liebert XD Solution
3.9
Liebert XDV Unit Placement
Liebert XDV units should be placed on top of the cabinets that generate the greatest amount of heat.
If heat loads are dispersed evenly throughout the room, the Liebert XDV modules may be spread out
accordingly.
The Liebert XDV must be placed toward the front of the equipment cabinet, so that its front bottom
edge is flush with the front top edge of the cabinet. Placing the unit farther back on the top of the unit
will restrict airflow into the cold aisle. Placing the unit farther to the front will decrease the amount
of hot air drawn into the unit.
Figure 17 Positioning Liebert XDV on top of cabinet
Liebert XDV is suspended
from ceiling structure...
X
X
....the separation
between the rack and
the Liebert XDV
should be held to
less than 1" (25mm).
If this is not possible,
an air blocker should
be added to prevent
unwanted airflow
between the hot aisle
and the cold aisle.
CORRECT
Liebert XDV is flush with
front edge of rack
INCORRECT
INCORRECT
Liebert XDV is
Liebert XDV
too far from front hangs over front
edge of rack
edge of rack
Both of the Liebert XDV’s power cords should be connected to power sources. If only one power source
is available, then only the power cord labeled “SECONDARY” should be connected to the power
source.
Piping for the Liebert XDV is routed upward to the main return and supply pipes to and from the Liebert XDP/Liebert XDC.
Table 4, below, may be used to determine the correct number of Liebert XDV modules.
Table 4
Determine required number of Liebert XDV modules (example below is Liebert XDV10)
Input Information
Total heat load in the room, kW
Reserve capacity needed
(10% to 25% of A is
recommended)
Step
A
B
C
Existing/planned Liebert
Deluxe/DS sensible capacity, kW
Required cooling capacity, kW = A + B
D
E
F
G
Room area, square feet
Results
H
I
L
Required Liebert XD system cooling capacity, kW = C – D
Number of Liebert XDV10 modules required = E ÷ 10, rounded up (60Hz)
= E ÷ 8, rounded up (50Hz)
Number of Liebert XDP/Liebert XDC modules required = F ÷ 16, rounded
up (60Hz and 50Hz)
Area served by each Liebert XDV10 = H ÷ F
Required Liebert XD system cooling density = E x 1000 ÷ H
OK if under 580 for 12-foot cold aisle spacing
OK if under 435 for 16-foot cold aisle spacing
Otherwise, additional Liebert Deluxe or Liebert DS unit capacity is
needed.
19
Designing a Liebert XD Solution
3.10
Liebert XDP/Liebert XDC Placement
The Liebert XDP/Liebert XDC may be placed in the critical space or in an adjacent equipment room.
The allowable distance between the Liebert XDP/Liebert XDC and its connected cooling modules is
determined by the piping design and by the amount of refrigerant required. Refer to 3.17 - Liebert XD
Refrigerant and 3.12 - Liebert XD Piping System Design.
The maximum height of any of the main or connecting piping should be no more than 20 feet (6m)
above the top of the Liebert XDP/Liebert XDC unit. Liebert XDV/Liebert XDO modules should be
placed as close to the same level as possible. The differences in elevation between the highest and lowest Liebert XDV or Liebert XDO module in a system should be no more than 6 feet (2m).
3.11
Examples of Expansion and Interlaced Connection of Liebert XD Cooling Modules
Figure 18 Liebert XDV units mounted on racks emitting 3kW of heat, top view
Downflow
Cooling
Unit
Downflow
Cooling
Unit
XDVs Mounted
on Equipment Racks
Equipment Racks
without XDVs
Circuit 1
20
Perforated
Raised
Floor Tiles
Designing a Liebert XD Solution
Figure 19 Liebert XDV units mounted on racks emitting 5kW of heat, top view
Downflow
Cooling
Unit
Downflow
Cooling
Unit
XDVs Mounted
on Equipment Racks
Interlaced piping arrangement
for enhanced protection
Circuit 1
Circuit 2
Equipment Racks
without XDVs
Perforated
Raised
Floor Tiles
Figure 20 Liebert XDV units mounted on racks emitting 8kW of heat top view
Downflow
Cooling
Unit
Downflow
Cooling
Unit
XDVs Mounted
on Equipment Racks
Interlaced piping arrangement
for enhanced protection
Circuit 1
Circuit 2
Perforated
Raised
Floor Tiles
21
Circuit 3
Designing a Liebert XD Solution
Figure 21 Liebert XDV units mounted on racks emitting 16kW of heat top view
Downflow
Cooling
Unit
Downflow
Cooling
Unit
XDVs Mounted
on Equipment Racks
Interlaced piping
arrangement
XDOs Mounted
for enhanced
on Equipment Racks
protection
3.12
Circuit 1
Circuit 2
Circuit 3
Circuit 4
Circuit 5
Circuit 6
Perforated
Raised
Floor Tiles
Liebert XD Piping System Design
All piping must be ASTM (American Society for Testing and Materials) Type “ACR” copper pipe. The
typical maximum operating pressure in the system is 90 psi (620kPa).
Piping for the Liebert XD system is arranged in a manner similar to piping for a chilled water system.
Liebert XD cooling modules are connected in parallel between the main return and supply pipes going
to and from the Liebert XDP/Liebert XDC. Figure 22 represents a typical configuration. The guidelines provided for pipe size must be strictly followed. Failure to size the main lines and
connection lines adequately may result in reduced cooling capacity. The critical aspects of
pipe sizing are related to refrigerant volume and pressure drop. Each must be minimized.
Figure 22 Piping for Liebert XDP/Liebert XDC used with Liebert XD cooling units
20ft.
(6.7m)
max.
All supply and
return mains must
be level with or
above the top of all
Liebert XDP or
Liebert XDC units
9ft.
(2.7m)
max.
Liebert XD Cooling
Modules
Liebert XDP/
Liebert XDC
SLOPE—The main supply and return lines to and from the Liebert XDP/Liebert XDC
must be sloped downward toward the Liebert XDP/Liebert XDC at a rate of 1-2" per
20 feet (25.4-51mm per 6m) of pipe run. Horizontal connector lines should also be
sloped downward from the cooling modules toward the main supply and return lines.
22
Designing a Liebert XD Solution
The assembly and connection means used for piping in the Liebert XD system are similar to that of
conventional refrigeration systems. All piping should be installed with high temperature brazed
joints. Soft solder is not recommended. The lines being brazed MUST be filled with flowing dry nitrogen during brazing to prevent excessive oxidation and scale formation inside the piping. Prevailing
good refrigeration practices must be employed for piping supports, leak testing, dehydration and
charging. Failure to use good system practices may result in damage to the system. Refer to the
ASHRAE refrigeration handbook for general good-practice refrigeration piping.
Follow all guidelines in 3.12 - Liebert XD Piping System Design and 3.13 - Liebert XD Piping
Slope during installation.
Insulate all piping lines to prevent condensation in applications where the dew point approaches the
R-134a refrigerant temperature. This might occur where Liebert XD module piping is above a
dropped ceiling or in other areas not measured by sensors connected to the Liebert XDP or Liebert
XDC.
See Table 5 for recommended pipe sizes and Figure 23 for piping segment locations.
Table 5
Supply, return pipe sizes for refrigerant loop
Key to Piping
in Figure 23
Pipe Function
Liebert XDP supply line, from Liebert XDP supply
to farthest Liebert XD cooling module
a
Liebert XDP return line, from farthest Liebert XD
cooling module to Liebert XDP return
B
From any model Liebert XDO/Liebert XDH supply
to supply line of Liebert XDP
C
From any model Liebert XDO/Liebert XDH return
to return line of Liebert XDP
D
From any model Liebert XDV/Liebert XDCF
supply to supply line of Liebert XDP
C
From any model Liebert XDV/Liebert XDCF return
to return line of Liebert XDP
D
Size / Equivalent Pipe Length
1-1/8" OD for lengths up to 60 feet
1-3/8" OD for lengths over 60 but less than 175 feet
2-1/8" OD for lengths up to 60 feet
2-5/8" OD for lengths over 60 but less than 175 feet
1/2" OD for lengths up to 10 feet
7/8" OD for lengths over 10 but less than 25 feet
7/8" OD for lengths up to 10 feet
1-1/8" OD for lengths over 10 but less than 25 feet
1/2" OD for lengths up to 10 feet
5/8" OD for lengths over 10 but less than 35 feet
5/8" OD for lengths up to 10 feet
7/8" OD for lengths over 10 but less than 35 feet
For additional information about piping connections, see the unit’s user manual: Liebert XDP, 16644;
Liebert XDC, SL-16671; Liebert XDO, SL-16666; Liebert XDV, SL-16626; Liebert XDCF, SL-16678;
and Liebert XDH SL-17210.
NOTE
To minimize the amount of refrigerant required, do NOT oversize the piping.
Figure 23 Generic piping layout
To Chiller,
Condenser
or Drycooler
To Chiller,
Condenser
or Drycooler
Liebert XDC
or
Liebert XDP
Liebert XDC
or
Liebert XDP
A
C
D
B
Pumped
Refrigerant
R134 a
C
D
A
C
D
B
Pumped
Refrigerant
R134 a
C
D
23
Liebert XD
Cooling Module *
Liebert XD
Cooling Module *
Supply
Lines
Return
Lines
Liebert XD
Cooling Module *
Liebert XD
Cooling Module *
* Liebert XDCF, Liebert XDH,
Liebert XDO or Liebert XDV
Designing a Liebert XD Solution
3.13
Liebert XD Piping Slope
The main supply and return lines to and from the XDP/XDC must be sloped downward toward the
XDP/XDC at a rate of 1-2" per 20 feet (25-51mm per 6m) of pipe run. Horizontal connector lines
should also be sloped downward from the cooling modules toward the main supply and return lines.
3.14
Bypass Flow Controllers
To ensure the XDP/XDC pumps operate within the optimum range, some installations require one or
more bypass flow controller(s). These devices are added to the field piping, and simulate the flow of
additional cooling modules.
Each bypass flow controller should be installed with one shutoff valve to allow the controller to be disabled when cooling modules are added to a Liebert XD system.
If bypass flow controllers are required, they should be connected between the main supply and the
main return lines of the field piping. The connection points to the main supply and return lines should
be in a convenient and accessible location between the Liebert XDP/Liebert XDC and the first Liebert
XD module in the circuit. See Figures 25 and 24 for piping details of the bypass flow controller.
Refer to Table 6 to determine the number of bypass flow controllers needed, based on the total nominal cooling capacity of the cooling modules in each Liebert XD system.
Table 6
Bypass flow controllers for Liebert XDC- or Liebert XDP-based systems
Cooling Modules Cumulative Model Size
Required Number of Bypass Flow Controllers
Liebert XDP
Liebert XDC
48 to 63
3
N/A
64 to 95
2
2
96 to 127
1
1
128 to 160
0
0
Figure 24 Bypass flow controller details, dimensions
4"
(102mm)
7/8"
(2.2mm) ID
Figure 25 Bypass flow controller arrangement
7/8" Refrigerant Grade
Full Port Ball Valve
Field-Supplied and Field-Installed
Flow Direction
Bypass Flow Controller
(Field-Installed)
Supply
Main
24
Return
Main
Designing a Liebert XD Solution
Figure 26 Bypass flow controller piping
Liebert XD
Cooling
Module #1
Liebert XD
Cooling
Module #2
Bypass Flow
Controllers
Coolant
Supply
Coolant
Return
Filter Dryer
Assembly
Liebert XDP
or
Liebert XDC
25
Designing a Liebert XD Solution
Figure 27 Hard-pipe connection diagram for Liebert cooling modules
Refer to Table 5
for details.
Return Main
(seen from end )
2-1/8" O.D.
Or 2-5/8" O.D.
Recommended Arc
Acceptable Arc
Supply Main
(seen from end )
1-1/8" O.D.
or 1-3/8" O.D.
Refrigerant -Grade
Full-Port Ball Valve
Field-Supplied and
Field-Installed to
Match Pipe Size
Refrigerant -Grade
Full-Port Ball Valve
Field-Supplied and
Field-Installed to
Match Pipe Size
Copper Tubing
Total length of each line
from XD cooling module
(XDH, XDO, XDV) to Main
Supply
to Cooling Module
Return from Cooling
Module
Top of XD Cooling Module
Rear of
XD Cooling
Module
26
Designing a Liebert XD Solution
3.15
Piping Installation Method Prefabricated Headers
The assembly and connection means used for piping in the Liebert XD system are similar to those
used for conventional refrigeration systems. All piping should be installed with high-temperature
brazed joints. Soft solder is not recommended. During brazing, the lines must be filled with flowing
dry nitrogen to prevent excessive oxidation and scale formation inside the piping. Prevailing good
refrigeration practices must be employed for piping supports, leak testing, dehydration and charging.
Failure to use good system practices may result in damage to the system. Refer to the ASHRAE
refrigeration handbook for general good-practice refrigeration piping.
Follow all guidelines in 3.12 - Liebert XD Piping System Design and 3.13 - Liebert XD Piping
Slope during installation.
Figure 28 Two-port prefabricated piping for Liebert XD cooling modules
H
ODS
L
ODR
96" Nominal
(2438mm)
48"
(1219mm) Ref. Typ.
Ref.
24"
Typ.
(610mm)
Supply
8-5/16" Ref. Typ.
(211mm)
Return
Table 7
Supply
inch (mm)
Return
inch (mm)
DPN000773
Two-port prefabricated piping legend
Branch Piping
Standard Run
Long Run *
Two Port
185797G21
185800G21
1-1/8
1-3/8
Height (H)
8-3/4 (222)
8-3/4 (222)
Length (L)
6-3/4 (171)
6-7/8 (175)
2-1/8
2-5/8
Height (H)
10-1/2 (267)
10-1/2 (267)
Length (L)
8-3/4 (222)
9-1/8 (232)
Outside Diameter (ODS)
Outside Diameter (ODR)
* Pipe runs greater than 60 equivalent feet
27
Designing a Liebert XD Solution
Figure 29 Four-port prefabricated piping for Liebert XD cooling modules
H
ODS
L
ODR
28-9/16"
Ref.
(725mm)
96" Nominal
(2438mm)
48" Ref. Typ.
(1219mm)
19-7/16"
Ref.
(494mm)
Supply
Return
19-7/16" Ref.
(494mm)
Table 8
Supply
inch (mm)
Return
inch (mm)
28-9/16" Ref.
(725mm)
Four-port prefabricated piping legend
Branch Piping
Standard Run
Long Run *
Four Port
186551G21
186552G21
1-1/8
1-3/8
Height (H)
8-3/4 (222)
8-3/4 (222)
Length (L)
6-3/4 (171)
6-7/8 (175)
Outside Diameter (ODS)
Outside Diameter (ODR)
2-1/8
2-5/8
Height (H)
10-1/2 (267)
10-1/2 (267)
Length (L)
8-3/4 (222)
9-1/8 (232)
* Pipe runs greater than 60 equivalent feet
28
DPN000773
Designing a Liebert XD Solution
Figure 30 Five-port prefabricated piping for Liebert XD cooling modules
H
L
ODS
ODR
120" Nominal
(3048mm)
24"
(610mm)
Ref. Typ.
Supply
4-5/8"
(117mm)
8-5/16"
(211mm) Ref. Typ.
Return
Table 9
Supply
inch (mm)
Return
inch (mm)
DPN000773
Five-port prefabricated piping legend
Branch Piping
Standard Run
Long Run *
Five Port
185797G51
185800G51
Outside Diameter (ODS)
1-1/8
1-3/8
Height (H)
8-3/4 (222)
8-1/2 (216)
Length (L)
6-3/4 (171)
7 (178)
2-1/8
2-5/8
Height (H)
10-1/2 (267)
10-1/2 (267)
Length (L)
8-3/4 (222)
9-1/8 (232)
Outside Diameter (ODR)
* Pipe runs greater than 60 equivalent feet
29
Designing a Liebert XD Solution
Figure 31 Ten-port prefabricated piping for Liebert XD cooling modules
H
ODS
ODR
L
120" Ref.
(3048mm)
7-7/16" Ref. Typ.
(189mm)
9-1/16"
(230mm) Ref. Typ.
Table 10
Supply
inch (mm)
Return
inch (mm)
7-7/16"
(189mm)
24"
(610mm)
Ref. Typ.
Supply
Return
DPN000773
Ten-port prefabricated piping legend
Branch Piping
Standard Run
Long Run *
Ten Port
186650G51
186553G51
1-1/8
1-3/8
Height (H)
8-3/4 (222)
8-3/4 (222)
Length (L)
6-3/4 (171)
6-7/8 (175)
2-1/8
2-5/8
Height (H)
10-1/2 (267)
10-1/2 (267)
Length (L)
8-3/4 (222)
9-1/8 (232)
Outside Diameter (ODS)
Outside Diameter (ODR)
* Pipe runs greater than 60 equivalent feet
30
16-9/16"
(421mm)
Ref. Typ.
Designing a Liebert XD Solution
3.16
Liebert XD Flex Pipe Kit
Liebert XD Flex Pipe kits are available in lengths of 4, 6, 8 and 10 feet (1.2, 1.8,2.4 and 3 meters).
Connection style to the unit end may be straight or 90 degrees with one-shot or removable connections. Connection to the prefabricated piping assembly is a threaded coupler. For data on acquiring
the correct kit for your installation, see Table 11.
Table 11
Liebert XD Flex Pipe assemblies, supply and return
Liebert XDV
Liebert XDCF
Liebert XDO
Liebert XDH
One-Shot
Couplings
Removable
Couplings
One-Shot
Couplings
One-Shot
Couplings
4ft long (1.2m), 0º
186568G4
187867G4
186568G4 2
186566G4
2 x 186566G4
2 x 187865G4
4ft long (1.2m), 90º
186567G4
187866G4
—
186565G4
2 x 186565G4
2 x 187864G4
6ft long (1.8m), 0º
186568G1
187867G1
186568G1 2
186566G1
2 x 186566G1
2 x 187865G1
6ft long (1.8m), 90º
186567G1
187866G1
—
186565G1
2 x 186565G1
2 x 187864G1
Description
3
One-Shot
Couplings
Removable
Couplings
8ft long (2.5m), 0º
186568G3
187867G3
186566G3
2 x 186566G3
2 x 187865G3
8ft long (2.5m), 90º
186567G3
187866G3
—
186565G3
2 x 186565G3
2 x 187864G3
10ft long (10m), 0º
186568G2
187867G2
186568G2 3
186566G2
2 x 186566G2
2 x 187865G2
10ft long (10m), 90º
186567G2
187866G2
—
186565G2
2 x 186565G2
2 x 187864G2
186568G3
Min Bend Radius,
Supply 1
7" (178mm)
7" (178mm)
Min Bend Radius,
Return 1
8" (203mm)
9" (229mm)
1. The minimum bend radius is for the flexible portion of the Liebert XD Flex Pipe. Because a section of hard pipe is at each end of the
Liebert XD Flex Pipe, the minimum bend radius can be larger.
2. Top Module
3. Bottom Module
31
Designing a Liebert XD Solution
3.17
Liebert XD Refrigerant
The refrigerant used in the Liebert XD system is HFC-134a (1,1,1,2-tetrafluoroethane), made by a
number of manufacturers. The amount of refrigerant used by the Liebert XD system may be significantly higher than in typical DX cooling systems.
NOTICE
Risk of improper oil use. Can cause equipment damage.
The Liebert XD pumped R-134a refrigerant circuits do not use refrigerant oil. Do NOT put oil
in the R-134a system.
All the major components of a Liebert XD system must be installed in a space with a volume of at
least 1,000 ft3 (28.3m3) for each 13 pounds of refrigerant in that system from ANSI/ASHRAE Standard 34-2007, Designation and Safety Classification of Refrigerant If the Liebert XDP/Liebert XDC is
placed in a separate area, such as a machine room, then this area must also meet the volume requirement. Inside the critical space, this includes the space under the raised floor, and the space between
the top of the raised floor and the bottom of a suspended ceiling. If the suspended ceiling is all open
grates, then this additional space, up to the overhead deck, would also be included.
Example
A space is 5,000 square feet, with an 18" raised floor and an 8' 6" suspended ceiling. Liebert XDOs
and a Liebert XDP are to be placed in this raised-floor area.
The volume of the space is (1.5 + 8.5) x 5,000 or 50,000 cubic feet.
The maximum amount of R-134a refrigerant that can be used in a single Liebert XDP/Liebert
XDC/Liebert XD module system within this space is 13 * (50000/1000) = 13 * 50 = 650 lb.
Multiple Liebert XD systems can be installed in this space, as long as the amount of R-134a
refrigerant in any one system does not exceed 650lb. (294.8kg).The maximum amount of refrigerant is 650lb (294.8kg) per Liebert XD loop.
NOTE
Local codes might permit exceeding the maximum refrigerant limit above if a refrigerant
detector and an exhaust system are installed. Installing oxygen sensors may meet some local
codes.
3.18
Determining Refrigerant Volume
After the preliminary system design is completed, Tables 12 through 21 may be used to determine
the amount of refrigerant required. Perform the calculation below for each Liebert XD system being
configured.
NOTE
All lengths in Tables 12, 13, 14 and 15, are actual pipe lengths, not equivalent pipe lengths.
3.18.1 Liebert XDP/Liebert XDC Pumped R-134a Circuit Volume
This is the refrigerant circuit from the Liebert XDP/Liebert to the Liebert XD cooling module.
NOTE
System refrigerant volume calculations in Tables 12, 13, 14 and 15, are based on a fully
loaded system. Additional charge may be required for lightly loaded systems.
32
Designing a Liebert XD Solution
Table 12
System R-134a charge for a Liebert XDP/Liebert XDC with any model Liebert
XDH/Liebert XDO/Liebert XDV/Liebert XDCF
Refrigerant Charge,
lb (kg)
Per Liebert XD Unit
(Excludes Connector Lines
to and from Liebert XD Cooling Module)
157 lb. (71.2kg)
Liebert XDP/Liebert XDC
3.55 lb. (1.61kg)
Liebert XDO
2.32 lb. (1.05kg)
Liebert XDV
2.66 lb. (1.21kg)
Liebert XDH (per circuit)
1.41 lb. (0.64kg)
Liebert XDCF
Table 13
System refrigerant charge for the supply and return mains
Refrigerant Charge,
lb/foot (kg/m)
0.45 (0.67)
Supply/Return Main Length and Diameter
Main supply actual length per 1-1/8" OD copper tubing
0.68 (1.01)
Main supply actual length per 1-3/8" OD copper tubing
0.28 (0.42)
Main return actual length per 2-1/8" OD copper tubing
0.43 (0.64)
Main return actual length per 2-5/8" OD copper tubing
Table 14
R-134a refrigerant charge for hard-piped connector lines to and from any model
Liebert XDH/Liebert XDO/Liebert XDV
Refrigerant Charge,
lb/foot (kg/m)
Hard-Piped Connector Length and Diameter
0.08 (0.12)
1/2" OD Liebert XDO/Liebert XDH/Liebert XDV supply connector actual length
0.13 (0.19)
5/8" OD copper tubing Liebert XDV supply connector actual length
0.26 (0.39)
7/8" OD Liebert XDO/Liebert XDH supply connector actual length
0.02 (0.03)
5/8" OD copper tubing Liebert XDV return connector actual length
0.04 (0.06)
7/8" OD copper tubing Liebert XDV return connector actual length
0.04 (0.06)
7/8" OD copper tubing Liebert XDH/Liebert XDO return connector actual length
0.07 (0.1)
1-1/8" OD copper tubing Liebert XDH/Liebert XDO return connector actual length
Table 15
R-134a refrigerant charge for Flex Pipe connector lines to and from any model
Liebert XDO/Liebert XDH/Liebert XDV/Liebert XDCF
Refrigerant Charge, lb. (kg)
Metal Flex Pipe Connector Length
Supply Line Diameter 1/2"
0.3 lb. (0.14)
4 ft. Flex Pipe All Liebert XD Cooling Module
0.5 lb. (0.23)
6 ft. Flex Pipe All Liebert XD Cooling Module
0.7 lb. (0.32)
8 ft. Flex Pipe All Liebert XD Cooling Module
0.8 lb. (0.36)
10 ft. Flex Pipe All Liebert XD Cooling Module
Return Line Diameter 5/8"
0.01 lb. (0.01)
4 ft. Flex Pipe existing Liebert XDV/Liebert XDCF systems
0.02 lb. (0.01)
6 ft. Flex Pipe existing Liebert XDV/Liebert XDCF systems
0.03 lb. (0.01)
8 ft. Flex Pipe existing Liebert XDV/Liebert XDCF systems
0.03 lb. (0.01)
10 ft. Flex Pipe existing Liebert XDV/Liebert XDCF systems
Return Line Diameter 1"
0.13 lb. (0.06)
4 ft Flex Pipe Liebert XDH/Liebert XDO supply
0.2 lb. (0.09)
6 ft Flex Pipe Liebert XDH/Liebert XDO supply
0.27 lb. (0.12)
8 ft Flex Pipe Liebert XDH/Liebert XDO supply
0.33 lb. (0.15)
10 ft Flex Pipe Liebert XDH/Liebert XDO supply
33
Designing a Liebert XD Solution
3.18.2 Calculating Refrigerant R134a Charge—Example
Using Tables 12, 13, 14 and 15, calculate the refrigerant charge of the individual sections of your
Liebert XD system. Add the calculated charge amounts to determine the amount of R-134a refrigerant required for one system combining a Liebert XDP with Liebert XD cooling modules (Liebert
XDCF, Liebert XDH, Liebert XDO and Liebert XDV). The example below combines one Liebert XDP
with 20 Liebert XDV8 cooling modules.
Table 16
Calculating refrigerant charge—example
Number of Units
or Piping Length, feet
Pounds Per Component
Liebert XDP/Liebert XDC
1
157
157
Liebert XDV8 Cooling Modules
20
2.32
46.4
Supply Main, 1-1/8"
100
0.45
45
Return Main, 2-1/8"
100
0.28
28
Liebert XDV 1/2" supply Liebert
XD Flex Pipes
20
0.8
16
Liebert XDV 5/8" return Liebert
XD Flex Pipes
20
0.03
0.6
Components
Total
Table 17
Total, lb.
293
Worksheet to calculate refrigerant charge
Components
Number of Units
or Piping Length
Pounds Per Component
Total
Total
Verify that the refrigerant volume of the Liebert XD system with the longest piping length is within
the allowable limit. If the allowable limit is exceeded, the Liebert XDP/Liebert XDC should be moved
closer to the cooling modules (refer to 3.17 - Liebert XD Refrigerant for limits and related details).
Another way to shorten the total pipe length is to reroute the pipe runs.
3.18.3 Liebert XDC DX R-407c Circuit Volume
NOTICE
Risk of improper lubrication. May cause equipment damage.
Liebert XDCs refrigerant R-407c circuits with refrigerant charges over 55 lb (24.9 kg) require
additional oil. See Figure 32 for the amount required for various charge levels.
Once the system has been fully charged with refrigerant, use a hand pump to add the
additional oil at the suction side of the system while the system is running.
The amount of oil added by field service must be recorded on a tag attached at the tandem the
amount added along with the date it was added. This will be documented on a tag located at
the tandem compressor and marked “Oil Added Field Service Record.” Refer to the Liebert
XDC user manual, SL-16671, available at Liebert’s Web site, www.liebert.com
34
Designing a Liebert XD Solution
Additional Oil Required Per Circuit, Ounces
Figure 32 Additional oil requirements for refrigerant charge
Each circuit contains ZRT250KCE Tandem
140
130
120
110
100
90
80
70
60
40
50
30
20
10
0
0
100
200
300
400
XDC160 System Refrigerant Field Charge Per Circuit, Pounds
To calculate the oil required, use the following formula:
Additional Oil Required per Circuit = (Refrigerant Charge * 0.4 - 22)
Enter the refrigerant charge in pounds to determine the oil required in ounces
NOTICE
Risk of improper compressor lubrication. Can cause compressor and refrigerant system
damage.
Failure to use oil types, viscosities and quantities recommended by the compressor
manufacturer may reduce compressor life and void the compressor warranty. See oil types
specified in Table 18.
• Do not mix polyol ester (POE) and mineral-based oils.
• Do not mix oils of different viscosities.
Consult Emerson or the compressor manufacturer if questions arise.
Table 18
Compressor oil types
Refrigerant Type
Compressor Type
Copeland Scroll and Digital Scroll
R-407c
POE OIL - ISO 32 Viscosity
®
Use Copeland POE Oil ULTRA 22 CC, Mobil EAL Arctic 22 CC, Copeland brand Ultra 22 CC, Copeland brand Ultra 32 CC,
Copeland brand Ultra 32-3MAF, Mobil EAL™ Arctic 22 CC or Uniqema RL32-3MAF or other Copeland-approved oil.
Weigh in the calculated charge based on Tables 19, 20 and 21 for Liebert XDC’s with air-cooled condensers.
Weigh in the calculated charge based on Tables 19 & 22 for Liebert XDCs with water/glycol-cooled
condensers. For Liebert XDCs with the water/glycol-cooled condenser remotely located, use
Tables 19, 21 & 22.
Table 19
Indoor unit refrigerant charge—R-407c
Model 60/50 Hz
Charge/Circuit, lb. (kg)
Liebert XDC160
17.5 (8.0)
35
Designing a Liebert XD Solution
Table 20
Outdoor condenser charge—R-407c
Model
Charge / Circuit, lb (kg)
CDL830
200 (90.8)
CSL616
254 (115.2)
CSL415
200 (90.8)
Table 21
Air cooled systems - liquid line charge - R-407c refrigerant per 100 ft (30 m) of Type
“ACR” copper tube
O.D.,
inches
Liquid Line,
lb (kg)
Hot Gas Line,
lb (kg)
3/8
3.7 (1.7)
—
1/2
6.9 (3.1)
—
5/8
11.0 (5.0)
2.2 (1.0)
3/4
15.7 (7.1)
3.1 (1.4)
7/8
23.0 (10.4)
17.5 (8.0)
1-1/8
39.3 (17.8)
7.8 (3.5)
1-3/8
59.8 (27.1
11.8 (5.4)
1-5/8
—
16.7 (7.6)
Table 22
3.19
Indoor water/glycol cooled condenser module charge—R-407c
Model 60 Hz
Charge / Circuit, lb (kg)
Liebert XDC160
30.0 (13.2) per circuit
Chilled Water Piping
The Liebert XDP is offered only with a two-way chilled water control valve. Some applications may
require the use of a pressure activated bypass valve, to prevent dead-heading of the chilled water
pump. This bypass valve must be specified by the engineer responsible for design of the chilled water
field piping system.
Chilled water connections to the Liebert XDP are near the bottom of the unit. Refer to the Liebert
XDP user manual (SL-16644) for further information. Piping is routed downward from the unit to
chilled water piping under the raised floor. Connections are made using standard practices for copper
chilled water piping. Field-supplied Victaulic® connections may be used to simplify installation in
existing facilities. Refer to Table 43 for additional information.
3.20
Electrical
Make all wiring and electrical connections in accordance with local and national codes. Refer to the
applicable table in 6.0 - Specifications and Model Number Nomenclature regarding wire size
and circuit protection requirements. Refer to electrical schematic when making connections.
3.21
Temperature/Humidity Sensor Locations
The display panel sensor & Liebert iCOM sensor (shipped loose) must always be installed in the conditioned space. The display panel sensor & Liebert iCOM sensor may be mounted on the Liebert
XDC/XDP’s front door if the unit is located in the area that it conditions.
The remote temperature / humidity sensor for the Liebert XDP and the Liebert XDC should be located
in the higher-temperature portion of the cold aisle where the XD modules are located. Alternatively, it
can be placed on the return air side of the primary air mover (e.g., Liebert DS™) in the room if it represents the conditions where all the XD cooling modules are located. It should not be installed where
ambient air might cause false readings, for example, near unsealed doors, windows and similar areas.
36
Liebert XD Cooling Modules—Liebert XDCF, Liebert XDH, Liebert XDO and Liebert XDV
4.0
LIEBERT XD COOLING MODULES—LIEBERT XDCF, LIEBERT XDH, LIEBERT
XDO AND LIEBERT XDV
4.1
Liebert XDCF Standard Features
The Liebert XDCF is a self-contained module designed to cool Egenera’s BladeFrame EX cabinets and
equipment without exhausting heat into the room.
Upper and lower modules may be mounted on the rear of an Egenera BladeFrame. Liebert XDCF
modules use R-134a refrigerant. When attached to a fully loaded BladeFrame EX rack, each Liebert
XDCF module has a nominal cooling capacity of 10kW (2.8 tons; 34,000 BTUh). Performance is based
on:
• Entering fluid temperature—55°F (12.8°C) and
• Dew point—50°F (10°C) or lower.
Liebert XDCF modules consist of a sheet-metal frame, coil and filter dryer. It has no moving parts
and needs no electricity.
The Liebert XDCF system (see Figure 33 below) consists of:
•
•
•
•
Liebert XDCF Modules—upper and lower models are available
Flex Pipe—connects Liebert XDCF units to supply and return piping
Liebert XD Piping—delivers pumped R-134a refrigerant through flexible piping
Liebert XDP or Liebert XDC—supplies R-134a refrigerant to Liebert XDCF modules
(see Liebert XDP or Liebert XDC user manual for required chiller or drycooler)
Figure 33 Liebert XDCF generic piping layout
To Chiller,
Condenser
or Drycooler
To Chiller,
Condenser
or Drycooler
Liebert XDC
or
Liebert XDP
Liebert XDC
or
Liebert XDP
Liebert XD
Cooling Module *
Pumped
Refrigerant
R134 a
Liebert XD
Cooling Module *
Supply
Lines
Return
Lines
Liebert XD
Cooling Module *
Pumped
Refrigerant
R134 a
Liebert XD
Cooling Module *
37
* Liebert XDCF, Liebert XDH,
Liebert XDO or Liebert XDV
Liebert XD Cooling Modules—Liebert XDCF, Liebert XDH, Liebert XDO and Liebert XDV
4.2
Liebert XDCF Mechanical Considerations
The Liebert XDCF is engineered to fit on the rear of the Egenera BladeFrame enclosure. Figure 34
illustrates the unit’s dimensions and the location of pipes. Figure 35 shows the attachment positions
of each module.
Figure 34 Overall dimensions
3-9/16"
(90mm)
7-5/16"
(186mm)
RE TURN
R-134a
Return
Pipe
1-7/16"
(37mm)
TIGHTE N FLE X P IP E
TO UNIT WITH THE
S CHRADE R V ALV E
IN THIS P OS ITION
ONCE FLE X P IP E CONNE CTIONS
ARE MADE TO THE UNIT DO NOT
DIS AS S E MBLE FROM THE UNIT .
RE MOV E CONNE CTIONS FROM
CE ILING HE ADE RS BY TURNING
THE S UP P LY V ALV E TO THE
OFF P OS ITION AND THE N TURNING
THE RE TURN V ALV E TO THE OFF
P OS ITION THE HE ADE R
CONNE CTIONS MAY BE RE MOV E D.
TIGHTE N FLE X P IP E
S UP P LY
TO UNIT WITH THE
S CHRADE R V ALV E
1194311 P1
IN THIS P OS ITION
3-9/16"
(90mm)
TOP
1-7/16"
(37mm)
13-7/16"
(341mm)
Upper unit shown;
both upper and
lower units have
same dimensions
Piping is not load-bearing
and should never be used
to lift or move the Liebert
XDCF
31-3/8"
(797mm)
BACK
38
EMERSON
NETWORK POWER
TM
T M
RIGHT
SIDE
Liebert
XD
Liebert XD Cooling Modules—Liebert XDCF, Liebert XDH, Liebert XDO and Liebert XDV
4.3
Liebert XDCF Installation Considerations
No cutting or drilling is required to attach the modules to the rear of the Egenera BladeFrame cabinet. All mounting holes, slots and pins required are fabricated at the factory.
Liebert XDCF modules attach beside the power modules on the rear of the Egenera BladeFrame (see
Figure 35).
Figure 35 Liebert XDCF unit mounting locations
Egenera BladeFrame
Detail Area: B
(Upper Module Mounting Area)
Locator stud for lower
unit mounting angle
Captive nuts
for right side
mounting
fasteners
Captive nuts
for right side
mounting
fasteners
Enlarged Detail Area "A"
(Lower Module Mounting Area)
4.4
Detail Area: A
(Lower Module
Mounting Area)
BladeFrame
Power Modules
Enlarged Detail Area "B"
(Upper Module Mounting Area)
Locator stud for upper
unit mounting angle
Liebert XDCF Piping Connection Methods and Points
The assembly and connection means used for piping in the Liebert XD system are the same as those
used in conventional refrigeration systems. Observe all standard practices during installation and
startup to prevent damage and contamination.
Supply piping connection is 1/2" OD copper pipe, and return piping connection is 5/8" OD copper. Both
supply and return fittings are one-shot connections. These fittings contain pressurized R-134a refrigerant inside the Liebert XDCF.
! WARNING
Risk of explosive discharge. Can cause death, injury and equipment damage.
Do not disconnect one-shot connections after they have been connected. Disconnection will
release pressurized R-134a refrigerant from the Liebert XDCF.
The Liebert XDCF has supply and return piping access on the top of each module.
39
Liebert XD Cooling Modules—Liebert XDCF, Liebert XDH, Liebert XDO and Liebert XDV
4.4.1
Header System
The Liebert XDCF module system requires use of the Liebert XD prefabricated piping assembly or
port kit. The prefabricated piping is compatible with the flex pipe required to attach to the Liebert
XDCF modules.
Figure 36 Liebert XDCF supply and return piping access points
Return Pipe
(5/8" diameter)
7-5/16"
(186mm)
3-9/16"
(90mm)
Supply Pipe
(1/2" diameter)
4.5
Pipe locations and
dimensions are the same
for upper and lower units
1-7/16"
(37mm)
Liebert XDH Standard Features
• Dual Refrigeration Circuits—Each Liebert XDH has two refrigeration circuits, one in the
upper half of the unit and one in the lower half. Dual refrigeration circuits permit altering cooling
levels in response to server room conditions. The dual refrigeration circuits permits interlaced
connection of two refrigerant sources to enhance system reliability.
• Dual Power Cords and Power Inlets—The Liebert XDH is supplied with two (2) detachable
power cords 10 ft (3m) long that attach to two IEC power inlets on the rear of the unit. Each
power cord has a NEMA 5-15P (IEC 320-C14) plug at the opposite end. The dual power cords
allow the unit to be powered by two separate power sources. If the secondary power cord is connected to a UPS, the Liebert XDH unit fans will continue to operate if utility power fails.
• Top Piping Access—The Liebert XDH has supply and return piping access on the top of each
module. Supply piping connection is 1/2" OD copper pipe, and return piping connection is 7/8" OD
copper.
• Corner Stabilizers—A stabilizer in each corner permits rolling the Liebert XDH with greater
ease and less chance of tipping.
• Air Diffusers—Two diffusers, one on the upper half of the unit and one on the lower half,
enhance flow of cooling air. Uni-directional and bi-directional diffusers are available.
4.6
Optional Features—Liebert XDH
• Smart Module—Smart modules will allow remote shutdown, fan failure alarms and automatically switching the second fan bank On and Off. The controls save energy by permitting the unit
to turn one fan in each fan bank Off based on the supply and return temperature. For electrical
connection details, refer to the Liebert XDH user manual, SL-17210, available on the Liebert Web
site: www.liebert.com
• Refrigerant Precharge—The Liebert XDH can be precharged with refrigerant. The unit will
have one-shot fittings and will be pressurized. The one-shot Liebert XD Flex Piping will also be
precharged with refrigerant.
• Field-Installed Flexible Piping (for use with prefabricated piping assemblies)—Field-installed
flexible piping kits are available in lengths of 4, 6, 8 and 10 feet (1.2, 1.8, 2.4 and 3 meters). Connection style to the unit end may be straight or 90 degrees with one-shot style couplings or removable couplings. Flex pipes with one-shot connections will have pressurized R134a. Flex pipes with
removable connections will have a low pressure nitrogen charge Connection to the prefabricated
piping assembly is with a threaded coupler. For information on acquiring the correct kit for your
installation, refer to DPN000780, available by calling 1-800-LIEBERT and from your local Emerson representative.
40
Liebert XD Cooling Modules—Liebert XDCF, Liebert XDH, Liebert XDO and Liebert XDV
• Tie-Down Bracket—An optional tie-down bracket may be installed on the Liebert XDH to
secure it in the row. The bracket keeps space between the Liebert XDH and adjacent equipment
constant, preventing vibration.
Figure 37 Liebert XDH dimensions
12" (305mm)
80"
(2032mm)
78"
(1981mm)
FRONT
42
(1067mm)
FRONT
Figure 38 Supply and return piping connections
Top of Liebert XDH
Detail “A”
6" (152mm)
3-5/8"
(92mm)
1-3/8"
(35mm)
2"
(51mm)
1/2" Supply, Upper
Refrigeration Circuit
4-1/8"
(104mm)
7/8" Return, Upper
Refrigeration Circuit
Rear
of Liebert
XDH
5"
(126mm)
Rear of XDH
7/8" Return, Lower
Refrigeration Circuit
1/2" Supply, Lower
Refrigeration Circuit
Detail "A"
41
DPN001180
Liebert XD Cooling Modules—Liebert XDCF, Liebert XDH, Liebert XDO and Liebert XDV
4.7
Liebert XDO Standard Features
• Micro Channel Heat Exchanger—The Liebert XDO unit includes two all-aluminum micro
channel heat exchangers.
• Fan—Air is drawn in the sides of the unit through the heat exchangers and is discharged by the
fan to the area below—The Liebert XDO fan tray hinges down to allow access to replace or service
all electrical components.
• Internal Mounting—The Liebert XDO unit is typically suspended from the overhead building
structure by inserting field-supplied threaded rods into the internal mounting brackets.
4.8
Optional Features Liebert XDO
• Refrigerant Pre-Charge—The Liebert XDO can be precharged with refrigerant. The unit will
have the one-shot fittings and be pressurized. The one-shot Liebert XD Flex Piping will also be
precharged with refrigerant.
• Field-Installed Flexible Piping (for use with prefabricated piping assemblies or port kits)—
Field-installed flexible piping kits are available in lengths of 4, 6, 8 and 10 feet (1.2, 1.8, 2.4 and 3
meters). Connection style to the unit end may be straight or 90 degrees with one-shot connections.
Flex pipes with one-shot connections will have pressurized R134a. Connection to the prefabricated piping assembly is with a threaded coupler. For information on acquiring the correct kit for
your installation, refer to DPN000780, available by calling 1-800-LIEBERT and from your local
Emerson Network Power representative.
• External Mounting Brackets—The Liebert XDO unit can be suspended by external mounting
brackets that are attached to the front and rear panels of the unit. The external mounting brackets are optional ship-loose items.
• Smart Modules—The Liebert XDO is available with an optional factory-installed control board.
A Liebert XDO smart module will allow remote monitoring, shutdown, fan failure alarms, condensate detection and automatically cycling the fan On and Off as the heat load requires.
• Lighting Fixture—Field-installable lighting fixtures are available in two voltages, 120V and
277V. The lighting fixture maybe attached to the bottom of the light panel to the left and right of
the fan. Each fixture consists of housing, reflector, ballast and diffuser. Fixtures are compatible
with standard 48" fluorescent bulbs. Bulbs are not included.
42
Liebert XD Cooling Modules—Liebert XDCF, Liebert XDH, Liebert XDO and Liebert XDV
Figure 39 Dimensional data—Liebert XDO hard-piped units
LEFT SIDE
24-1/8"
(613mm)
REAR
72-1/4"
(1835mm)
RIGHT SIDE
FRONT
LEFT
SIDE
25-3/8"
(645mm)
22-3/8"
(568mm)
24-1/4"
(616mm)
9-3/4"
(248mm)
9-3/4"
(248mm)
FRONT
DPN000771
Figure 40 Dimensional data—Liebert XDO with pre-charged option
LEFT SIDE
24-1/8"
(613mm)
REAR
72-1/4"
(1835mm)
FRONT
RIGHT SIDE
43
RIGHT
SIDE
Liebert XD Cooling Modules—Liebert XDCF, Liebert XDH, Liebert XDO and Liebert XDV
Figure 41 Liebert XDO internal mounting location
26-3/4"
(679mm)
18-1/2"
(470mm)
REAR
7/8" (22mm)
diameter mounting
holes
1"
(25mm)
TOP VIEW
1"
(25mm)
26-3/4"
(679mm)
7/8" (22mm)
diameter mounting holes
FRONT
44
DPN000771
Liebert XD Cooling Modules—Liebert XDCF, Liebert XDH, Liebert XDO and Liebert XDV
Figure 42 Top and front electrical access points and terminal block—standard Liebert XDO modules
Knockouts for high-voltage
connections
TOP
Grounding Lug
High-Voltage
Cover
FRONT
Note:
Access to electrical terminal blocks
is through hinged fan tray
DPN000771
Figure 43 Top and front electrical access points—Liebert XDO smart modules
Knockouts for
High-Voltage
Connections,
Standard Liebert
XDO Modules
Front
Knockouts for
Low-Voltage
Connections,
Liebert
XDO Smart Modules
45
Liebert XD Cooling Modules—Liebert XDCF, Liebert XDH, Liebert XDO and Liebert XDV
4.9
Liebert XDV Standard Features
• Micro Channel Heat Exchanger—The Liebert XDV unit includes one all-aluminum micro
channel heat exchanger.
• Dual IEC Power Cords and Power Inlets—The Liebert 115V, 60Hz Liebert XDV unit is supplied with two detachable, 10 ft (3m) power cords that attach to two IEC power inlets in the rear
of the unit. Each power cord has a NEMA 5-15P (IEC 320-C14) plug at the opposite end. The Liebert 230V, 60/50 Hz Liebert XDV unit is supplied with two non-detachable 10 ft (3m) power cords.
This feature allows the unit to be powered by two separate power sources.
• Dual Air Inlets—The Liebert XDV unit can be configured to allow air to enter from the rear
grille or the bottom of the unit.
• Dual Fans—Airflow is provided by two fans on the front of the unit. Dual switches—Controls on
the front of the unit permit the use of one fan or both fans.
• Foundation Mounting—There are two 1/4-20 cage nuts located on the underside of unit which
allow direct attachment to any Liebert Foundation cabinet, bolts provided with Liebert XDV unit.
• Mounting Clips for Non-Liebert Cabinets—The Liebert XDV unit is supplied with mounting
clips that allow attachment to a non-Liebert cabinet (Some drilling may be required).
4.10
Optional Features—Liebert XDV
• Refrigerant Pre-Charge—The Liebert XDV can be precharged with refrigerant. The unit will
have the one-shot fittings and will be pressurized. The one-shot Liebert XD Flex Piping will also
be precharged with refrigerant.
• External Mounting Brackets—The Liebert XDV can be suspended from the overhead building
structure. The external mounting brackets are ship-loose items.
• Field-Installed Flexible Piping (for use with prefabricated piping assemblies)—Field-installed
flexible piping kits are available in lengths of 4, 6, 8 and 10 feet (1.2, 1.8, 2.4 and 3 meters). Connection style to the unit end may be straight or 90 degrees with one-shot or removable connections. Flex pipes with one-shot connections will have pressurized R134a. Flex pipes with
removable connections will have a low pressure nitrogen charge Connection to the prefabricated
piping assembly is with a threaded coupler. For information on acquiring the correct kit for your
installation, refer to DPN000781, available from Liebert by calling 1-800-LIEBERT and from
your local Emerson Network Power representative.
• Smart Module—Liebert XDV smart modules allow remote shutdown, fan failure alarms and automatically switching the second fan On and Off. This saves energy by permitting the unit to run
with one fan and switching on a second fan when the temperature requires both fans for cooling.
For electrical connection details, refer to the Liebert XDV user manual, SL-16626, available on
the Liebert Web site: www.liebert.com
46
Liebert XD Cooling Modules—Liebert XDCF, Liebert XDH, Liebert XDO and Liebert XDV
Figure 44 Liebert XDV dimensions
W
DT
PH
DF
DB
H
DPN000770
Liebert XDV With
Pre-charged Option or
Removable Connection
(all dimensions except piping
height are the same as for the
hard-piped setup, see Table 23)
Table 23
Dimensional data
Illustration
Key
Dimension
Measurement,
in. (mm)
DT
Depth Top
39-1/2 (1003)
DB
Depth Bottom
29-5/8 (752)
W
Width
22-7/8 (581)
H
Height
14 (356)
Piping Height,
hard-piped
18-5/8 (473)
Piping Height,
one-shot option
or removable connection
19-5/8 (498)
Depth Front
9-7/8 (250)
PH
DF
47
Liebert XD Cooling Modules—Liebert XDCF, Liebert XDH, Liebert XDO and Liebert XDV
Figure 45 Liebert XDV dimensions with one-shot connection
Top of Liebert XDV
SCHRADER VALVE
SUPPLY(IN)
RETURN(OUT)
SCHRADER VALVE
SUPPLY (IN)
RETURN (OUT)
Supply
Connection
1/2"
Detail Area “A”
Return
Connection
5/8"
Detail “A”
Figure 46 Suspending single Liebert XDV from Unistruts
Bolt 3/8" -16; nut and
washer provided in kit
Unistrut
(field-supplied)
Hanger brackets available
from factory; purchased
separately and shipped loose
Bolt a bracket to each
corner of the XDV
48
Liebert XD Cooling Modules—Liebert XDCF, Liebert XDH, Liebert XDO and Liebert XDV
Figure 47 Suspending single Liebert XDV from the roof structure
3/8"-16 all-thread bolts,
field-supplied, typical
Hanging XDV unit
To prevent bypass air
from recirculating
through the XDV without
it passing through the
cabinet, this space
between the hanging
XDV and the cabinet
must be blocked.
49
Liebert XD Cooling Modules—Liebert XDCF, Liebert XDH, Liebert XDO and Liebert XDV
Figure 48 Alternative mounting methods—mounting multiple Liebert XDV units
Attach hanger brackets
to each corner of each XDV.
This arrangement permits
mounting from either Unistruts
or from overhead structure.
Double hanger brackets
available from factory;
purchased separately
and shipped loose
10 - 32 x 5/8" length;
factory-supplied
1/4 - 20 x 5/8" length typical, 2;
factory-supplied
10 - 32 x 5/8" length typical, 3;
factory-supplied
Unistrut field-supplied
upper XDV: 1
Bolt 3/8"- 16,
lower XDV: 2
nut and washer
factory-supplied
50
Liebert XDC and Liebert XDP
5.0
LIEBERT XDC AND LIEBERT XDP
5.1
Liebert XDC Standard Features
• Compressors—Scroll with a suction gas cooled motor, vibration isolators, thermal overloads,
manual reset high-pressure switch and pump down low-pressure switch.
• Refrigeration System—Dual refrigeration circuits each including liquid line filter dryers,
refrigerant sight glass with moisture indicator, electronic control valve, adjustable externally
equalized expansion valves and liquid line solenoid valves.
• Heat Exchanger—Brazed plate design with interwoven circuiting constructed of stainless steel
plates, copper brazed.
• Pumps—Centrifugal type, end suction, canned rotor design.
• Microprocessor Control—The control system is microprocessor-based with an external LCD
numerical display to allow observation of specified adjustable functions. Normal operating conditions are indicated on the LCD panel, which is mounted either on the unit or on the wall, depending on application details (see user manual, SL-16671). The control system also monitors unit
operation and activates an alarm when any of the specified factory preset conditions are exceeded.
• Cabinet and Frame—Custom, powder-painted steel panels. A hinged control access panel opens
to a second front panel, which is a protected enclosure for all high-voltage components. Frame is
constructed of 14 gauge heliarc welded tubular steel and painted using an auto-deposition coating
system.
5.1.1
Liebert XDC Optional Features
• Water / Glycol Condensers—A water/glycol floor stand condenser option is available for heat
rejection requirements. The water/glycol floor stand can be located beneath the XDC unit or
installed nearby.
Figure 49 Liebert XDC dimensional data
B
Overall
A
Overall
Recommended
Minimum Hot Gas
Supply & Liquid Return
Piping Opening
C
78"
1981mm
1"
(25.4mm)
17"
(432mm)
D
5"
(127mm)
2"
(51mm)
D
Unit
Base
E
Unit Base
Unit Dimensional Data
Table 24
Floor Cutout Dimensions
Shaded areas indicate a
recommended clearance
of 34" (864mm) for
component access.
DPN000768
Liebert XD Chiller dimensions, weight
Dimensional Data, inches (mm)
Shipping Weight, lb (kg)
Air Cooled Model
A
B*
C
D
E
Domestic
Export
Liebert XDC160
74 (1880)
34 (864)
33-1/8 (841)
33 (838)
72 (1829)
1945 (882)
2093 (949)
* Dimension does not include the bezel of the disconnect switch.
51
Liebert XDC and Liebert XDP
Figure 50 Liebert XDC piping locations
** To first cooling module
or bypass flow controller
Install replaceable filter dryer
assembly in liquid supply line G
* Orientation determined
by installer.
F - Return From Cooling Units
G - Supply to Cooling Units
47"
(1193.8mm) 44"
(1117.6mm)
6" (152mm)
23"
(584.2mm)
Dimensions are
approximate and
subject to change
without notice.
*** A - Hot Gas
Refrigerant Lines
DPN000768
B - Liquid
Refrigerant Lines
* Allow 8" (204mm) of clearance for filter replacement
** To ensure all refrigerant flow is filtered, install the filter dryer assembly
between the discharge line of the XDC and the first bypass flow controller
or the first cooling module.
*** Use double discharge risers in DX hot gas lines that are 15 feet (4.6m) in height.
This will allow proper oil return to the compressors when the system is running
at low loads. Refer to the Liebert XDC user manual SL-16671 for further information.
Table 25
Liebert XD Chiller piping connection sizes
Air Cooled Models
Liebert XDC160
Piping Outlet Connection Sizes, OD Cu, inches
A
B
C
D
E
F
G
1-3/8
7/8
-
-
-
2-1/8
1-1/8
52
Liebert XDC and Liebert XDP
Figure 51 Positioning a water/glycol Liebert XDC for placement on a floor stand
A - Return from
Cooling Units
B - Supply to
Cooling Units
44"
(1118mm)
47"
(1194mm)
6"
(153mm)
23"
(584mm)
C - Hot Gas
Refrigerant Lines
D - Liquid
Refrigerant Lines
Customer
Water
Supply
E - Threaded
Female
Connections
Customer
Water
Return
F - Cup Fitting
Capillary Lines are 48" (1220mm)
Limit Valve Distance from Condensers
Customer Provided Piping
Table 26
DPN001419
Liebert XDC Water/Glycol Piping Connection Sizes
Piping Outlet Connection Sizes, OD Cu, inches
Model
A
B
C
D
E*
F**
XDC160
2-1/8
1-1/8
1-3/8
7/8
2-1/2
2-1/8 or 2-5/8
* Threaded Female Connection
** 2-1/8" for 1" WRV, 2-5/8" for 1-1/4" WRV
53
Liebert XDC and Liebert XDP
Figure 52 Piping locations—floor stand and valve assembly
33"
(838mm)
72"
(1828mm)
24" Nominal
(609mm)
TOP VIEW OF FLOOR STAND
Hot Gas 1
Hot Gas 2
Shaded areas indicate a recommended
clearance of 36" (915mm) for component
access and water/glycol piping.
Liquid 1
Liquid 2
33" (838mm)
Outlet
20-1/4"
(514mm)
10-1/2"
(267mm)
6-1/2"
(165mm)
Circuit 1
12-5/16"
(313mm)
26-15/16" (684mm)
LEFT SIDE OF CABINET
Circuit 2
Inlet
FLOOR STAND CONNECTIONS
54
2-1/4" - 5-1/4"
(57 - 133 mm)
DPN001419
Liebert XDC and Liebert XDP
Figure 53 Front view of Liebert XDC and electrical enclosures
Primary
Disconnect
Switch
Secondary
Disconnect
Switch
Status Lamps
User Interface
Enclosure Cover Latch
Enclosure Cover Latch
Hazardous Voltage
Enclosure Cover
Hazardous Voltage
Enclosure Cover
SECONDARY
ELECTRICAL ENCLOSURE
COMPRESSOR SECTION
PRIMARY
ELECTRICAL ENCLOSURE
PUMP SECTION
Figure 54 Liebert XDC electrical enclosure knockout locations for field wiring
Knockout for
Input Power
Enclosure Cover
Not Shown for Clarity
55
Liebert XDC and Liebert XDP
Figure 55 Liebert XDC high-voltage connections—primary disconnect switch, 60Hz models
Transformer Fuse Block
Compressor Fuse Blocks
Customer Power Connection
Primary Power Block
Ground
Lug
Primary
Disconnect
Switch
Compressor Contactors
Transformer 3
Relay
Electronic Hot Gas
Bypass Controllers
Figure 56 Liebert XDC high-voltage connections—primary disconnect switch, 50Hz models
Compressor
Circuit Breakers
Busbar
Primary Power Block
Wire
Raceway
Customer
Power
Connection
Ground
Lug
Primary
Disconnect
Switch
Compressor
Contactors
Transformer 3
Relay
56
Electronic Hot Gas
Bypass Controllers
Liebert XDC and Liebert XDP
Figure 57 Liebert XDC high-voltage connections—secondary disconnect switch, 60Hz models
Power Connection
From Primary
Power Block
Ground Lug
Secondary Disconnect Switch
Transformer 2
Pump Circuit Breakers
Secondary
Power Block
Transformer
Fuse Block
Transformer 1
Pump Contactors
Figure 58 Liebert XDC high-voltage connections—secondary disconnect switch, 50Hz models
Power Connection
From Primary
Power Block
Secondary
Disconnect
Switch
Ground Lug
Transformer 2
Pump Circuit
Breakers
Power Block
Fuse Blocks
Busbar
Transformer 1
Pump Contactors
57
Liebert XDC and Liebert XDP
Figure 59 Liebert XDC heat rejection electrical connection points
HEAT REJECTION ELECTRICAL
CONNECTION POINTS
Field-supplied 24V. Class 1 wiring
to interlock heat rejection from pigtails:
70A and 71A - Compressor 1 circuit
70B and 71B - Compressor 2 circuit
70C and 71C - Dual Source relay (optional)
Electrical handy box,
factory-installed with cover
Figure 60 Liebert XDC electrical enclosure knockout locations for Extra Low-Voltage connections
User Interface
(Wall Box) Wiring
Liebert XD Module Condensate
Connections (optional;
depends on features
supplied with Liebert XD Module)
Temperature/Humidity
Sensor Wiring
Alternate Knockout
for Temperature/Humidity
Sensor Wiring
Enclosure Cover Not Shown for Clarity
58
Liebert XDC and Liebert XDP
Figure 61 Liebert XDC Extra Low Voltage field-connection points
Control Display Panel
Four thermostatic wires
to be connected toTB3
Temperature/Humidity Sensor
Cable Provided with
Temperature/Humidity Sensor Board
TS-3
TS-4
TS-5
TS-6
Factory-Wired
Temperature
Sensor(s)
H2O (24)
RAD1 (50)
XDOC (51)
K3COM
K3NO
K3NCL
37
38
77
78
Control wiring must be Class 2 and installed
in accordance with the National Electrical Code (NEC)
Requires shielded cable
59
Liebert XDC and Liebert XDP
5.2
Liebert XDP Standard Features
• Heat Exchanger—Brazed plate design with interwoven circuiting constructed of stainless steel
plates, copper brazed.
• Pumps—Centrifugal type, end suction, internally cooled, canned rotor design.
• Cabinet and Frame—Custom powder painted steel panels. A hinged control access panel opens
to a second front panel, which is a protected enclosure for all high-voltage components. Frame is
constructed of 14 gauge heliarc welded tubular steel and painted using an auto-deposition coating
system.
• Liebert iCOM—The Liebert iCOM offers the highest capabilities in unit control, communication
and monitoring of Liebert Precision Cooling units. The Liebert iCOM is a factory-installed assembly. Operating conditions and status are indicated on the unit display, which is mounted either on
the unit or on the wall, depending on application details (see user manual, SL-16644). The control
system also monitors unit operation and activates an alarm when any of the specified factory preset conditions are exceeded.
The unit includes two temperature-humidity sensors to aid in effective cooling.
Figure 62 Liebert XDP dimensions
A
Overall
B
Overall
C
Side Panel
78"
(1981mm)
E
m)
27m
1
(
5"
D
1" (25mm)
2-3/8"
(60mm)
11"
(279mm)
Floor Cutout Dimensions
D
Unit Base
The shaded area indicates
a recommended clearance
of 36" (914mm) for component
access.
E
Unit Base
Unit Dimensional Data
Table 27
DPN001598
Liebert XDP dimensions
Dimensional Data inches (mm)
Shipping Weight, lb (kg)
Model
A
B*
C
D
E
Domestic
Export
Liebert
XDP160
38 (965)
34 (864)
33-1/8 (841)
33 (838)
36 (914)
990 (449)
1067 (484)
* The dimension does not include the bezel of the disconnect switch.
60
Liebert XDC and Liebert XDP
Figure 63 Liebert XDP piping access points and external features
To first cooling module
or bypass flow controller **
Close this
valve during
normal
operation
Install replaceable filter dryer assembly
in liquid supply line B.
* Orientation
determined
by installer
A - Return From Cooling Modules
17-1/4"
(438mm)
B - Supply to Cooling Modules
Emerson recommends field-installation
of shutoff valves at these points to permit
isolating the Liebert XDP for maintenance.
16-1/8"
(410mm)
10" (254mm)
19"
(483mm)
Dimensions are
approximate
and subject to change
without notice.
* Allow 8" (204mm) clearance
for filter replacement.
** To ensure all refrigerant flow is filtered,
install the filter dryer assembly between
the discharge line of the Liebert XD P and
the first bypass flow controller or the first
cooling module.
C - Chilled Water Supply
From Chilled Water Source
D - Chilled Water Return
To Chilled Water Source
Table 28
DPN001598
Unit piping outlet connection sizes, inches, OD Cu
Pipe Connection Point
Model
A
B
C
D
Liebert
XDP160
2-1/8
1-1/8
2-5/8
2-5/8
61
Liebert XDC and Liebert XDP
Figure 64 Front view of Liebert XDP and electrical enclosure
Disconnect
Switch
iCOM
User
Interface
Enclosure Cover
Latch
Hazardous Voltage
Enclosure Cover
Front of Liebert XDP
DPN001598
Figure 65 Liebert XDP electrical enclosure knockout location for hazardous voltage wiring
XDP Input Power
Knockout
Enclosure cover
not shown for clarity
62
Liebert XDC and Liebert XDP
Figure 66 Liebert XDP electrical enclosure knockout locations for field wiring
User Interface
(Wall Box) Wiring
Liebert XD Module Condensate
Connections (optional;
depends on features
supplied with Liebert XD Module)
Temperature/Humidity
Sensor Wiring
XDP Input Power
Knockout
Alternate Knockout
for Temperature/Humidity
Sensor Wiring
Enclosure cover
not shown for clarity
Figure 67 Liebert XDP high-voltage connections—60Hz
Transformer 2
(supplied on 460V
units only)
Customer Power
Connection
Ground Lug
Power Block
Disconnect Switch
Transformer 6
Pump Fuse
Blocks
Fuse Blocks
Transformer 1
Pump Contactors
63
Liebert XDC and Liebert XDP
Figure 68 Liebert XDP high-voltage connections—50Hz
Customer Power
Connection
Ground Lug
Transformer 2
Disconnect Switch
Power Block
Pump Circuit
Breakers
Transformer 6
Busbar
Fuse Blocks
Transformer 1
Pump Contactors
64
Specifications and Model Number Nomenclature
6.0
SPECIFICATIONS AND MODEL NUMBER NOMENCLATURE
Table 29
Liebert XDCF specifications
Models
XD-CF-10-BP-*, XD-CF-10-TP-*
XD-CF-10-BPE-*, XD-CF TPE-*
Cooling capacity, maximum
10kWH / 2.8 Tons / 34,000 BTUh
55°F (13°C) entering fluid temperature,
50°F (10°C) or lower dew point
Conditions
Dimensions, inches (mm)
Height – including pipe connections
31-3/8" (797mm)
Width
13-7/16" (341mm)
Depth
7-5/16" (186mm)
Weight, lb (kg)
Unit only
18 (8.2)
Shipping weight
30 lb. (13.06 kg)
Pipe connections
Refrigerant Supply
from Liebert XDP/Liebert XDC
1/2" threaded one-shot coupling on the unit
Refrigerant Return
to Liebert XDP/Liebert XDC
5/8" threaded one-shot coupling on the unit
Cabinet exterior finish
Gray
Agency
Safety
CSA — CE
Figure 69 Liebert XDCF model number nomenclature
Example: XD-CF-10-BP—*
XD
Liebert
Xtreme
heat
density
system
CF
10
B
Model Size
Module for
BladeFrame EX
P
—
P = Coupling
T = Top
B = Bottom
65
- = Domestic Packaging
E = Export Packaging
*
Revision
level
Specifications and Model Number Nomenclature
Table 30
Liebert XDH20 specifications
XDH20BK 1
XDH20SK 1
(60Hz)
Models
XDH20BS 1
XDH20SS 1
(50/60Hz)
XDH20, 60Hz Nominal (98ºF [37°C] EAT): 22kW/6.3 Tons
XDH20, 60Hz Maximum(105ºF [41°C] EAT): 25.3kW/7.2 Tons
XDH20, 50Hz Nominal (98ºF [37°C] EAT): 21.6kW / 6.1 Tons
XDH20, 50Hz Maximum(105ºF [41°C] EAT): 25.3kW/7.2 Tons
Cooling Capacity
Capacity rating is @ 55ºF (13ºC) Entering Fluid Temperature
and 50ºF (10ºC) or lower dew point
Conditions
Electrical Requirements
120V-1ph-60Hz
220-240V-1ph-50Hz, CE /
208-240V-1ph-60Hz, CSA
Two IEC320-C14 power inlets and two IEC
power cords with NEMA 5-15P plugs
Two IEC320-C14 power inlets and two IEC
power cords with IEC320-C14 plugs
5
2.5
600
575
Input
Input Power Connections
Full Load Amps
Power Consumption,
Nominal, Watts
Dimensions, inches (mm)
Height—Unit Only
78 (1981)
Height—Including
Pipe Connections
80 (2032)
Width
12 (305)
Depth
42 (1067)
Weight, lb (kg)
Unit Only
233 (106)
Shipping Weight
317 (144)
233 (106)
317 (144)
6
Number of Fans
Airflow, Nominal, ft3/min
(m3/hr)
Audible Noise, Sound Power
2500 (4248)
2428 (4125)
81 dBa
81 dBa
Pipe Connections
Refrigerant Supply
1/2" OD, Cu (optional 1/2" threaded one-shot coupling on the unit)
Refrigerant Return
7/8" OD, Cu (optional 7/8" threaded one-shot coupling on the unit)
Serviceable Parts
Fans and electrical components
Cabinet Exterior Finish
Black, matte finish, heat-fused powder coat
Options
Smart Module control
board (factory-installed)
Dry contact (24VAC - 1A maximum)
Pre-Charged Refrigerant
R-134a refrigerant, one-shot connections
Air Diffusers
Uni-directional or bi-directional
Agency
Approvals
CSA 60Hz
1. Refer to Figure 70 for complete part number.
66
CE 50Hz, CSA 50/60Hz
Specifications and Model Number Nomenclature
Table 31
Liebert XDH32 specifications
XDH32BK 1
XDH32SK 1
(60Hz)
Models
XDH32BS 1
XDH32SS 1
(50/60Hz)
XDH32, 60Hz Nominal (98ºF [37°C] EAT): 30kW/8.5 Tons
XDH32, 60Hz Maximum(105ºF [41°C] EAT): 34kW/9.7 Tons
XDH32, 50Hz Nominal (98ºF [37°C] EAT): 30kW / 8.5 Tons
XDH32, 50Hz Maximum(103ºF [39°C] EAT): 34kW/9.7 Tons
Cooling Capacity
Capacity rating is @ 55ºF (13ºC) Entering Fluid Temperature
and 50ºF (10ºC) or lower dew point
Conditions
Electrical Requirements
Input
220-240V-1ph-50Hz, CE /
208-240V-1ph-60Hz, CSA
120V-1ph-60Hz
Two IEC320-C14 power inlets and two IEC
Input Power Connections power cords with NEMA 5-15P plugs
Full Load Amps
Power Consumption,
Nominal, Watts
10
Two IEC320-C14 power inlets and two IEC
power cords with IEC320-C14 plugs
5
1200
1150
Dimensions, inches (mm)
Height—Unit Only
78 (1981)
Height—Including
Pipe Connections
80 (2032)
Width
12 (305)
Depth
42 (1067)
Weight, lb (kg)
Unit Only
246 (112)
246 (112)
Shipping Weight
330 (150)
330 (150)
Number of Fans
6
Airflow, Nominal,
ft3/min (m3/hr)
Audible Noise,
Sound Power
4000 (6796)
3850 (6541)
86 dBa
86 dBa
Pipe Connections
Refrigerant Supply
1/2" OD, Cu (optional 1/2" threaded one-shot coupling on the unit)
Refrigerant Return
7/8" OD, Cu (optional 7/8" threaded one-shot coupling on the unit)
Serviceable Parts
Cabinet Exterior Finish
Fans and electrical components
Black, matte finish, heat-fused powder coat
Options
Smart Module control
board (factory-installed)
Dry contact (24VAC - 1A maximum)
Pre-Charged Refrigerant
R-134a refrigerant, one-shot connections
Air Diffusers
Uni-directional or bi-directional
Agency
Approvals
CE 50Hz, CSA 50/60Hz
CSA 60Hz
1. Refer to Figure 70 for complete part number.
67
Specifications and Model Number Nomenclature
Figure 70 Liebert XDH model number nomenclature
Example: XDH32BK— —*
XD
H
Liebert
Xtreme heat
density system
32
20 = Model size
32 = Model size
Horizontal
row cooler
B
K
—
K = 120V-1ph-60Hz
S = 208-240-1ph-60Hz
220-240-1ph-50Hz
B = Base unit
S = Smart modules
68
—
*
— = Domestic packaging
E = Export packaging
— = Hard piped
P = Pre-charged
One-Shot Coupling
R = Removable Coupling
Revision
level
Specifications and Model Number Nomenclature
Table 32
Liebert XDO16 specifications
XDO16BK 1
XDO16SK 1
(60Hz)
Models
Cooling Capacity
XDO16BS 1
XDO16SS 1
(60Hz)
XDO16BS 1
XDO16SS 1
(50Hz)
Nominal (85°F [29.4°C]
EAT): 14kW/4.0Tons
Maximum (93°F [34°C]
EAT): 17.3 kW / 4.9 Tons
Nominal (85°F [29.4°C] EAT): 16kW / 4.5 Tons
Maximum (90°F [32°C] EAT): 17.3 kW / 4.9 Tons
Conditions
Capacity rating is @ 55°F (13°C) Entering Fluid Temperature and 50ºF or lower dew point
Electrical Requirements
Input Voltage
1ph-60Hz-120V
1ph-60 Hz-220-240V
Input Power Connections
1ph-50 Hz-220-240V
Terminal blocks provided internal to unit
Full Load Amps
2.7A @ 120V
1.50 @ 230V
1.50 @ 230V
Wire Size Amps
3.4
2.0
2.0
Overcurrent Protection Device
15
15
15
Power consumption,
nominal, watts
335
350
350
Dimensions, inches (mm)
Length
72-1/4 (1835)
Width
24-1/8 (613)
Height
22-1/2 (572) not including electrical and piping access
Weight, lb (kg)
Unit only
Shipping weight
150 (68)
238 (108)
296 (134)
Installed, with refrigerant,
without options
Number of Fans
155 (70)
1
Airflow, Nominal, ft3/ min
(m3/ hr)
Audible Noise
1
1
2700 (4587)
2250 (3822)
85 dBa sound power
83 dBa sound power
Pipe Connections
Refrigerant Supply
from Liebert XDP/Liebert XDC
1/2" OD, Copper
Refrigerant Return
to Liebert XDP/Liebert XDC
7/8" OD, Copper
Serviceable Parts
Fan and electrical components
Exterior Finish – Bottom,
Sides, Front and Rear
Black, matte finish, heat-fused powder coat
Exterior Finish - Top
Hot-dipped galvanized steel
Agency
Approvals
CSA 60 Hz
CSA 60Hz
1. Refer to Figure 71 for full part number.
69
CE 50Hz
Specifications and Model Number Nomenclature
Table 33
Liebert XDO20 specifications
XDO20BK 1
XDO20SK 1
Models
XDO20BS 1
XDO20SS 1
60Hz
60Hz
50Hz
Nominal (92°F [33°C] EAT):
17.7kW / 5 Tons
Maximum (103°F [39°C]
EAT): 23.1kW / 6.6 Tons
Nominal (92°F [33°C] EAT): 20kW / 5.7 Tons
Maximum (100°F [38°C] EAT): 23.1kW / 6.6 Tons
Cooling Capacity
Capacity rating is @ 55ºF (13°C) Entering Fluid Temperature and 50ºF (10°C) or lower dew
point
Conditions
Electrical Requirements
Input Voltage
1ph-60Hz-120V
Input Power Connections
1ph-60Hz-220-240V
1ph-50 Hz-220-240V
Terminal blocks provided internal to unit
Full Load Amps
2.7A @ 120V
1.64A @ 230V
1.64A @ 230V
Wire Size Amps
3.4
2.0
2.0
Overcurrent Protection Device
15
15
15
Power consumption,
nominal, watts
335
350
350
Dimensions, inches (mm)
Length
72-1/4 (1835)
Width
24-1/8 (613)
Height
22-1/2 (572) not including electrical and piping access
Weight, lb (kg)
Unit only
Shipping weight
150 (68)
238 (108)
296 (134)
Installed, with refrigerant,
without options
Number of Fans
155 (70)
1
Airflow, Nominal, ft
(m3/ hr)
3/
min
Audible Noise
1
1
2700 (4590)
2250 (3820)
85 dBa sound power
83 dBa sound power
Pipe Connections (without flex pipe)
Refrigerant Supply
from Liebert XDP/Liebert XDC
1/2" OD, Copper
Refrigerant Return
to Liebert XDP/Liebert XDC
7/8" OD, Copper
Serviceable Parts
Fan and electrical components
Exterior Finish – Bottom,
Sides, Front and Rear
Black matte finish, heat-fused powder coat
Exterior Finish - Top
Hot-dipped galvanized steel
Agency
Approvals
CSA 60 Hz
1. Refer to Figure 71 for full part number.
70
CE 50Hz
Specifications and Model Number Nomenclature
Figure 71 Liebert XDO model number nomenclature
Example: XDO20BK– –*
XD
O
20
Liebert Xtreme
heat density
system
K
B = Base unit
S = Smart modules
Revision
level
Liebert XDO - 50Hz Models
2 Liebert XDOs per lighting unit; 120V or 277V; 4’ standard fluorescent tubes (not
included)
0.9A per 120V light fixture;
0.4A per 277V light fixture
Power, optional lighting fixture
Smart Module control board
(factory-installed)
None
Dry contact 24VAC - 1A maximum
Pre-Charged Refrigerant
R-134a Refrigerant, one-shot connections
Liebert XDO dimensions—domestic and export
Shipping Dimensions, inches (mm)
Domestic
All Models
*
- = Domestic Packaging
E = Export Packaging
— = Hard-Piped
P = Pre-charged
One-Shot Coupling
R = Removable Coupling
Liebert XDO - 60Hz Models
Lighting Fixtures (ship loose)
Model
–
Options for Liebert XDO20 and Liebert XDO16
Option
Table 35
–
K = 120V-1ph-60Hz
S = 220-240V-1ph-60Hz,
220-240V-1ph- 50Hz
16 = Model size
20 = Model size
Overhead
cooling
module
Table 34
B
Length
84 (2134)
Width
30 (762)
Unit Dimension
Unpacked, inches (mm)
Export
Height
30 (762)
Length
83 (2108)
Width
30 (762)
* Includes piping connections
71
Height
Length
Width
Height *
30 (762)
72-1/4
(1835)
24-1/8
(613)
25-1/2
(648)
Specifications and Model Number Nomenclature
Table 36
Liebert XDV8 specifications
XDV8BK 1
XDV8SK 1
XDV8BT 1
XDV8ST 1
60 Hz
Models
60 Hz
50 Hz
Nominal (92°F [33°C] EAT): 8kW / 2.3 Tons
Maximum (95°F [35°C] EAT): 8.7kW / 2.5 Tons
Cooling Capacity
XDV8BS 1
XDV8SS 1
50 Hz
Nominal (92°F [33°C] EAT): 7kW/ 2.0 Tons
Maximum (103°F [39°C] EAT): 8.7kW/2.5Tons
Capacity rating is @ 55ºF (13ºC) Entering Fluid Temperature and
50ºF (10ºC) or lower dew point, rear air inlet.
Conditions
Electrical Requirements
Input
120V model: 1ph-60 Hz
230V model: 1ph-60
Hz
Input power connections
Full Load Amps
Power consumption,
nominal, watts
230V model: 1ph-50 Hz
2 power connections, each model
120V model: 2.0A
230V model: 1.0A
180
190
190
190
Dimensions, in. (mm)
Height – unit only
14 (355) not including pipe connections
Height – including pipe
connections
18-5/8 (473)
Width
22-7/8 (581)
Depth – Top
39-1/2 (1003)
Depth – Bottom
29-5/8 (752)
Weight, lb (kg)
Unit only
77 (35)
Shipping weight
125 (57)
Installed, with
refrigerant
79 (36)
Number of Fans
Airflow, Nominal,
ft3/ min (m3/ hr)
Audible noise
2
2
2
2
1000 (1699) with rear inlet.
Bottom inlet airflow may be less,
depending on restrictions inside cabinet
833 (1415) with rear inlet.
Bottom inlet airflow may be less,
depending on restrictions inside cabinet
78 dBa sound power
73 dBa sound power
Pipe Connections (without Liebert Flex Pipe)
Refrigerant Supply
from Liebert
XDP/Liebert XDC
1/2" OD Cu, (optional 1/2" threaded coupler flex piping)
Refrigerant Return
to Liebert XDP/Liebert
XDC
5/8" OD Cu, (optional 3/4" threaded coupler flex piping)
Serviceable Parts
Cabinet Exterior
Finish
Fans and electrical components
Black, matte finish, heat-fused powder coat
Options
Smart Module control
board (factory-installed)
Pre-Charged
Refrigerant
Dry contact, 24VAC, 1A maximum
R-134a refrigerant, one-shot connections
Agency
Approvals
CSA 60Hz
CSA 50Hz
1. Refer to Figure 72 for complete part number.
72
CE 50Hz
Specifications and Model Number Nomenclature
Table 37
Liebert XDV10 specifications
XDV10BK 1
XDV10SK 1
XDV10BT 1
XDV10ST 1
60 Hz
Models
XDV10BS 1
XDV10SS 1
60 Hz
50 Hz
50 Hz
Nominal (98ºF [37ºC] EAT: 10kW / 2.8 Tons
Nominal (98ºF [37ºC] EAT): 8.3kW / 2.4 Tons
Maximum (106ºF [41ºC] EAT): 11.7kW/3.3 Tons Maximum (116ºF [47ºC] EAT): 11.7kW/3.3 Tons
Cooling Capacity
Capacity Rating is @ 55ºF (13ºC) Entering Fluid Temperature and
50ºF (10ºC) or lower dew point, rear air inlet.
Conditions
Electrical Requirements
Input 120V model: 1ph-60 Hz 230V model: 1ph-60 Hz
Input power connections
Full Load Amps
Power consumption,
nominal, watts
230V model: 1ph-50 Hz
2 power connections, each model
120V model: 2.0A
230V model: 1.0A
180
190
190
190
Dimensions, in. (mm)
Height – unit only
14 (355) not including pipe connections
Height – including hard
pipe connections
18-5/8 (473)
Height – including oneshot connections
19-5/8 (498)
Width
22-7/8 (581)
Depth – Top
39-1/2 (1003)
Depth – Bottom
29-5/8 (752)
Weight, lb (kg)
Unit only
77 (35)
Shipping weight
125 (57)
Installed, with refrigerant
79 (36)
Number of fans
Airflow, Nominal,
ft3/ min (m3/ hr)
Audible noise
2
2
2
2
1000 (1699) with rear inlet.
Bottom inlet airflow may be less,
depending on restrictions inside cabinet
833 (1415) with rear inlet.
Bottom inlet airflow may be less,
depending on restrictions inside cabinet
78 dBa sound power
73 dBa sound power
Pipe Connections (without Liebert Flex Pipe)
Refrigerant supply
from Liebert XDP/ XDC
1/2" OD, Cu, (optional 1/2" threaded coupler flex piping)
Refrigerant return
to Liebert XDP/ XDC
5/8" OD, Cu, (optional 3/4" threaded coupler flex piping)
Serviceable Parts
Cabinet Exterior Finish
Fans and electrical components
Black, matte finish, heat-fused powder coat
Options
Smart Module control
board (factory-installed)
Dry contact, 24VAC, 1A maximum
Pre-Charged Refrigerant
R-134a refrigerant, one-shot connections
Agency
Approvals
CSA 60Hz
CSA 50Hz
1. Refer to Figure 72 for complete part number.
73
CE 50Hz
Specifications and Model Number Nomenclature
Table 38
Liebert XDV dimensions—domestic and export
Unit Dimensions Unpacked
Length x Width x Height
inches (mm)
Shipping Dimensions
Length x Width x Height
inches (mm)
Model
Domestic
Export
Unit Only
All Models
48 x 40 x 24-1/4
(1219 x 1016 x 616)
45-4/5 x 30-3/4 x 33
(1163 x 781 x 839mm)
39-1/2 x 22-7/8 x 14
(1003 x 581 x 356)
Figure 72 Liebert XDV model number nomenclature
Example: XDV10BK– –*
XD
V
10
B
8 = Model size
10 = Model Size
Liebert Xtreme
heat density
system
Vertical top
cooler
K
—
K = 120V-1ph-60Hz
S = 230V, 1ph-50Hz
T = 208-240V-1ph-60Hz,
220-240-1ph-50Hz
B = Base unit
S = Smart modules
74
—
*
— = Domestic
Packaging
E = Export
Packaging
— = Hard piped
P = Pre-charged
One-Shot Coupling
R = Removable coupling
Revision
level
Specifications and Model Number Nomenclature
Table 39
Liebert XDC160 specifications
XDC160 Air
XDC160AA
Models
XDC160 Water / Glycol
XDC160AM
189192G3 (90-100°F)
189192G5 (65-85°F)
See Tables 40, 41 and 42 for
Water/Glycol
performance data
40% of system nominal capacity (64 kW for 60Hz unit)
Cooling Capacity, tons (kW)
46 (160)
Minimum Load
37 (130)
Electrical Requirements
Input 460V-3ph-60Hz 380/415V-3ph-50Hz
Full Load Amps
460V-3ph-60Hz
79A
Minimum supply wire sizing ampacity
84A
Maximum fuse or circuit breaker size
100A
Dimensions, inches (mm)
Height - Main unit only
78 (1981)
Height - Main unit only, as shipped
83 (2108)
Width - Main unit
74 (1879)
Depth - Main unit
34-5/8 (879)
Height - Water/Glycol-Cooled Condenser Stand
N/A
24 (607)
Width - Water/Glycol-Cooled Condenser Stand
Depth - Water/Glycol-Cooled Condenser Stand
N/A
N/A
72 (1829)
33 (839)
Weight, lb (kg)
Main unit only
1800 (817)
Main unit only, as shipped
Domestic: 1945 (882); Export: 2093 (949)
Water/Glycol-Cooled Condenser Stand
N/A
1075 (488)
Water/Glycol-Cooled Condenser Stand, as shipped
N/A
1150 (521)
Pipe Connections, inches, O.D., Cu
Liebert XD Coolant supply to Liebert XD cooling
modules
1-1/8
Liebert XD Coolant return from Liebert XD cooling
modules
Liquid line, DX circuit
2-1/8
7/8
Hot gas line, DX circuit
1-3/8
Heat Rejection Equipment
95°F ambient air cooled condenser
1-CDL830 or 2-CSL415
N/A
Number of XD Cooling Units Connected, Maximum (Minimum)
Liebert XDCF10
Liebert XDH20
16 (6)
8 (4)
Liebert XDH32
5 (2)
Liebert XDO16
10 (4)
Liebert XDO20
8 (4)
Liebert XDV8
20 (8)
Liebert XDV10
16 (7)
Black, matte finish, heat-fused powder coat
Cabinet Exterior Finish
Maximum Ambient Operating Temperature °F (°C)
86 (30)
Agency
Approvals
CSA
75
CE
CSA
Specifications and Model Number Nomenclature
Table 40
Floor stand specifications—water-cooled Liebert XDC
XDC160 Water Floor Stand - 60Hz
189192G3
189192G5
Entering Fluid Temp °F (°C)
65 (18)
70 (21)
75 (24)
85 (29)
95 (35)
46.1(162.3)
46.1(162.3)
46.1(162.3)
46.1(162.3)
44.5(156.5)
Performance Data
Cooling capacity, tons (kW)
Flow, GPM
Pressure Drop, psi (Ft Water)
50
58
70
110
142
2.7 (6.2)
4.9 (11.3)
5.4 (12.5)
20.7 (47.8)
27.3 (63.1)
1"
1"
1"
1"
1"
2-1/8"
2-1/8"
2-1/8"
2-1/8"
2-1/8"
Heat Rejection Equipment
Water regulating valve size
Piping Connections
Water / glycol supply and return lines
Table 41
Floor stand specifications—Liebert XDC with 40% propylene glycol
XDC160 Glycol Floor Stand - 60Hz - 40% PG
189192G3
Outside Ambient °F (°C)
95 (35)
100 (38)
105 (41)
Max Entering Fluid Temp °F (°C)
110 (43)
110 (43)
110 (43)
Performance Data
Cooling capacity, tons (kW)
42.5 (149.4)
Total Heat Rejection, (kW)
192.6
Flow, GPM
206
Pressure Drop, psi (ft water)
37.2 (85.9)
Heat Rejection Equipment
Drycooler
DNT 940A
2 x DNT 880A*
Drycooler Pressure Drop, psi (ft water)
6.7 (15.5)
2.9 (6.6)
Glycol pump package - 10hp
9A31258G3
Pump Control Package - 208V
9A34606G47
Pump Control Package - 460V
9A32114G4
Pump Total Head @ 204 GPM, ft water
145
Water regulating valve size
1-1/4"
Piping Connections
Water / glycol supply and return lines
2-5/8"
* When multiple drycoolers are used, ensure flow is balanced.
76
Specifications and Model Number Nomenclature
Table 42
Floor stand specifications—Liebert XDC with 40% ethylene glycol
XDC160 Glycol Floor Stand - 60Hz - 40% EG
189192G3
Outside Ambient °F (°C)
95 (35)
100 (38)
105 (41)
Max Entering Fluid Temp °F (°C)
110 (43)
110 (43)
110 (43)
Performance Data
Cooling capacity, tons (kW)
42.5 (149.4)
Total Heat Rejection, (kW)
192.6
Flow, GPM
204
Pressure Drop, psi (ft water)
35.9 (82.9)
Heat Rejection Equipment
Drycooler
DNT 940A
Drycooler Pressure Drop, psi (ft water)
6.5 (15.1)
2 x DNT 880A*
2.7 (6.3)
Glycol pump package - 10HP
9A31258G3
Pump Control Package - 208V
9A34606G47
Pump Control Package - 460V
9A32114G4
Pump Total Head @ 204 GPM, ft water
145
Water regulating valve size
1-1/4"
Piping Connections
Water / glycol supply and return lines
2-5/8"
* When multiple drycoolers are used ensure flow is balanced.
Figure 73 Liebert XDC model number nomenclature
Example: XDC160AA– –*
XD
Liebert
Xtreme heat
Density system
C
Chiller
unit
160
A
A
Place holder
Model size
–
Place holder
Voltage-phase-frequency
A = 460V-3ph-60Hz
M = 380/415-3ph-50Hz
77
–
Place holder
*
Revision
level
Specifications and Model Number Nomenclature
Table 43
Liebert XDP160 specifications
XDP160RC--3
Models
XDP160RA--3
160kW / 46 Tons, 60Hz
XDP160RM--3
140kW / 40 Tons, 50Hz
Each capacity is based on 45ºF (7ºC) entering water temperature and
140gpm (530lpm) water flow rate. Capacity is reduced when glycol mixtures
are used in place of 100% water.
Cooling Capacity, Nominal
Minimum Load
30% of nominal system capacity or 48kW (163,800BTU/H)
Electrical Requirements
Input
Full Load Amps
208V/3ph/60Hz
460V/3/ph60Hz
380/415V/3ph/50Hz
4A
2.1A
2.3A
Dimensions, inches (mm)
Height – Unit only
78 (1981)
Height – As shipped
83 (2108)
Width
38 (965)
Depth
34 (864)
Unit only
821 (372)
Weight, lb (kg)
Shipping weight
Domestic: 990 (449); Export: 1067 (484)
Installed, with refrigerant and chilled water
1038 (471)
Pipe Connections
Refrigerant supply to Liebert XD cooling
module
1-1/8" OD, Cu
Refrigerant return from Liebert XD cooling
module
2-1/8" OD, Cu
Chilled water supply and return
2-5/8" OD, Cu
2-way, 2" nominal; 35 PSIG close-off pressure rating;
150 PSIG maximum allowable pressure
Control valve
Pressure Drop – Chilled Water Side
20 psig (137kPa, 1.38bar), with 140 gpm (530lpm) water flow rate,
control valve fully open
Temperature Rise – Chilled Water Side
at rated flow, °F (°C)
8.0 (4.4)
6.9 (3.8)
Number of Liebert XD cooling units connected, maximum (minimum)
Liebert XDCF10
16 (5)
Liebert XDH20
8 (3)
Liebert XDH32
5 (2)
Liebert XDV8
20 (6)
Liebert XDV10
16 (5)
Liebert XDO16
10 (3)
Liebert XDO20
8 (3)
Cabinet Exterior Finish
Black, matte finish, heat-fused powder coat
Operating Ambient
Temperature, Maximum, °F (°C)
86 (30)
Agency
Approvals
CSA 60Hz
78
CE 50Hz
Specifications and Model Number Nomenclature
Figure 74 Liebert XDP model number nomenclature
Example: XDP160RA– –*
XD
P
160
Pumping
unit
Liebert
Xtreme heat
Density system
R
A
Pump
Redundancy
Model size
–
Place holder
Voltage-phase-frequency
A = 460V-3ph-60Hz
C = 208V-3ph-60Hz
M = 380/415-3ph-50Hz
79
–
*
Revision
level
Place holder
Ensuring The High Availability
Of Mission-Critical Data And Applications.
Emerson Network Power, the global leader in enabling business-critical
continuity, ensures network resiliency and adaptability through
a family of technologies—including Liebert power and cooling
technologies—that protect and support business-critical systems.
Liebert solutions employ an adaptive architecture that responds
to changes in criticality, density and capacity. Enterprises benefit
from greater IT system availability, operational flexibility and
reduced capital equipment and operating costs.
Technical Support / Service
Web Site
www.liebert.com
Monitoring
800-222-5877
[email protected]
Outside the US: 614-841-6755
Single-Phase UPS
800-222-5877
[email protected]
Outside the US: 614-841-6755
Three-Phase UPS
800-543-2378
[email protected]
Environmental Systems
800-543-2778
Outside the United States
614-888-0246
Locations
United States
1050 Dearborn Drive
P.O. Box 29186
Columbus, OH 43229
Europe
Via Leonardo Da Vinci 8
Zona Industriale Tognana
35028 Piove Di Sacco (PD) Italy
+39 049 9719 111
Fax: +39 049 5841 257
Asia
7/F Dah Sing Financial Centre
108 Gloucester Road
Wanchai
Hong Kong
852 2572 2201
Fax: 852 2519 9210
While every precaution has been taken to ensure the accuracy
and completeness of this literature, Liebert Corporation assumes no
responsibility and disclaims all liability for damages resulting from use of
this information or for any errors or omissions.
© 2008 Liebert Corporation
All rights reserved throughout the world. Specifications subject to change
without notice.
® Liebert is a registered trademark of Liebert Corporation.
All names referred to are trademarks
or registered trademarks of their respective owners.
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